hey,interested in getting a 635csiis there any around for sale?what budget should i haveis there any differences between 635csi of different years? if so what are theythanks for your help
The gist of the differences above are correct. If you desire more specifcs search this forum as it has been discussed before. All m30 powered e32 and e34s will have a b35 and 6/87 up 635csi will also have a b35. Depending on the application there will be different mount bosses on the block. The only application that will directly bolt in with 100% certainty is the e24 variant. It has been said that early e32 m30b35s have the correct bosses, but you will need to confirm.