Reply to 8C 361:
Grab this one and keep an eye out for a parts tractor with decent undercarriage.
New D2 chain is definitely available, I believe it comes out of Italy, definitely not China, price I was quoted recently here in Australia was $US1,000 a side, though you will need to drill slightly larger pad bolt holes, I was told last night by a Aussie expert that the drill bit required for that job costs $40, and you need it running at a real slow speed.
New pins and bushes are available, I was quoted around $US900 per side to supply and fit on my D2 4U here in Oz by two different workshops 2,000 miles apart, so no chance of colluding on prices I figured😆.
Aftermarket bellow seals for the bottom rollers are also available at around $US30each, though everyone says the rollers are getting harder to find, they can be built up with weld fairly easily if necessary. A nice gentleman over on the ACME site just sold a bunch of D2 bottom rollers, like about 16 of them, plus track frames for $US75 or there abouts for the whole lot, they were located in L.A.
I bought one of those new main clutch plates from General Gear for my D2, it cost about $US180 I think, I also got my pressure plates machined as they had wallowed out. The Machinest said it was one of the hardest steels he had ever worked on and took a long time, much harder than motorcycle brake discs which he figured up till then were the hardest metal to smooth on his stone grinder.
regards
Mike