Looks like an awesome deal, should be a fun project.Those mounts are not done they will be supported better soon. The third gen sat in someone’s yard for 15 years, previous owner(a family member of mine) was able to pick it up for free. He put a few parts on it and then sold it to me. It has a large number of issues but most are cosmetic. Besides the engine being due for a rebuild. It runs but has a misfire and smokes.
Have you test fit CV shafts yet? I know the GMT900's managed to just sneak by beside the shaft, but your cantilever design should allow tons of space.