Regarding the Classic Sweede site, I bought the last M47 flywheel he had a month or so back from Dai and it was terrible, so much rust it needs significant machining, it would have been simpler to just buy a new one from Skandix for about 600 delivered or one of the custom ones Julian has mentioned for the 500 mark.
Skandix,
http://www.skandix.de/en/spare-parts/engine/engine-repair/crankshaft/flywheel/1002822/?f=s205222
I may have a line on some LH2.4 flywheels in the near future (a few weeks), though nothing to bank on yet. Machine shop still doing its thing with mills and mandrels. Very expensive I assure you, though R&D always is. Fingers crossed it works, there are two engine swaps waiting on a success in the machine shop. There will be a late 140/240 flywheel machined for LH2.4 compatibility, an LH2.2 740 flywheel modified for LH2.4 (the dish is different so quite difficult, not just drilling) and ideally all of the programming done to do it again easily, and cheaply.
If it all works and there are spare flywheels they will be available here. The goal is to have a local machine shop tooled up to do the conversions in a high quality manner for a reasonable price. Much easier that the grief we all go through now to get a flywheel!
Should be an update on this in a week.