@VolDan, @1971_144GL, @Major Ledfoot, @Carnage this is looking like it is coming together well with a plan but getting it all aligned will be fun.
Currently I am removing some parts from the car for another request and will then look at getting it over to Greg's to swap out with a 164.
I will probable plan to swap the cars over when I am next back fro interstate work (away 18th to 26th May). I am only about 40 min/46km from Greg's place near Castlemaine.
I hope all this can align, thanks.