First up, welcome.
Second up, let's have a look at these issues.
#2 - Might be able to help you out there, I have trim.
#3 - Try a set from a 240.
#4 - The window winder handle screw covers are black, not chrome. They're obtainable from any 240.
#5 - I can sort you out with a glovebox lid, although it will need a new knurled bit of plastic from Dave Barton.
#6 - I may have an old period correct radio somewhere; need to check if it works though.
#7 - I highly recommend Dashboard Recovering Services at U3, 4 Cunneen St Mulgrave NSW to making an old dash top like that look brand new. Contact Ian on 0409-171-165.
Before
http://i.imgur.com/afNAj6B.jpg
After
http://i.imgur.com/oKdaKSj.jpg
Price for this is about $250 -$300 plus shipping.
#8 - Might have them, too - have to check.
.....
#10 - That's a roof joint trim. Yes, I have a pair for you.
#11 - I should have one for you.
#12 - There ought to be a heather outlet floor vent sticking out through that hole in the trim, and then a big black rubber donut around the vent that holds the trim in place. Make sure you've got the outlet, it clips onto a shutter junction box.
#13 - I have a set of suitable door cards for that type of trim - but I'd like to sell them as a set. Let me know if you're interested and want pics of them.
#14 - SCA is your best bet.
#15 - The screws on those hubcaps are supposed to have a rubber O-ring on the inside which stops the screw falling out. I have a pair of good ones if you're stuck.
#16 - See #4, get it from a 240.
#17 - Not sure about the wheel arch, but I have all the rest of that trim, including the lower trim below the doors.
......
#21 - VP Autoparts stocks some NOS and replacement rear seat upholstery, Look up the trim code from the plate in the engine bay. http://www.vp-autoparts.com/
#22 - Aircon is available from any wrecked 240; the same basic HVAC and a/c design was used from 1973 to 1993. The heater boxes were pre-equipped to fit an evaporator.
#23 - TST Moulded Carpets in Melbourne do great carpets for very reasonable prices, you'll want a late model 144 carpet to fit cars with a long transmission tunnel.
https://www.tstcarpets.com.au/moulded_car_carpet
#24 - Like #4 and #16, obtainable from a 240. If you want nice new plastic covers to go over the bolts for the handles, Voluparts in the US can supply these.
https://store.voluparts.com/volvo-240-grab-handle-covers/
#25 - These were actually painted body colour on the 164s.
#26 - These are actually a spring, rather than a strut. See list of Essential Links at the end of this monster post for suppliers.
#27 - Can't help with boot liner or wheel, but not that the 164 wheels are 15 x 5.5 inch, not 15 x 5 inch as used on the 140s which look very similar.
#28 - #32 - Ahhhh, you need a parts manual; see Essential Links.
#33 - This is where you have to get creative. AFAIK there's no off-the-shelf- new replacement.
#34 - the 164 headlights are the same as 240 round headlights, both are getting rare now.
#35 - that's a year model 1973 front bumper.
#36 - The bonnet release cable is the same part number as a 240 one, AFAIK they're available new.
#37 - That isn't rubber trim, it's pinchweld, and I have the devil of a time getting some for my 142 project. I got it from CVI Automotive eventually.
https://www.cvi-automotive.se/en/articles/2.14816.49199/edge-protector-strip-sold-by-the-meter?q=679754
#38 - There are two manufacturers for these tail lights - Cibie, and Hella. They look very similar and function exactly the same, but the lens covers do not interchange between the two (just so you don't have to find this out by experience). You can get replacements new, but expect to pay big for them.
...oh yeah, the Essential Link list - You'll need these links in your restoration quest.
First up, download this PDF - it's the parts manual. It's an absolute essential.
https://weblisher.textalk.se/gcp/20160127-008/paper.pdf
Company links? (These are my 'Usual Suspects' when I need parts)
GCP - stocks NOS for old Volvos - https://www.gcp.se/en/
VP Autoparts - stock all sorts of parts - http://www.vp-autoparts.com/main.aspx?guest=yes
CVI - stocks all sorts of Volvo spares - https://www.cvi-automotive.se/
VP and CVI each stocks components unique to them
Skandix - Has nearly everything, but not quite - https://www.skandix.de/en/
FCP Euro - will stock some new parts for older cars - https://www.fcpeuro.com/