John,
I am building a standard GDT70 with lightweight body work, full glass windshield, stock LS7 motor and GT2 6 speed gearbox with the 3.44 final drive. I don't think there are any insanely trick parts on the it, beyond the LS7. In point of interest, we just fired the engine for the first time yesterday. Running through the cats and borla mufflers, the thing is LOUD! A couple issues to chase down on the management side (it's running really rich at the moment) and there are concerns about oil pressure, but overall it's pretty cool/crazy. I can't even imagine what the LS7 is like with a Kinsler on it!
J., are you running the Crank Brothers pedals? THey look super convenient with 4 side entry, but I have concerns about getting ejected when planting the pedals doing the big log crossings (25" logs). I switched from Shimano to Time and they seem pretty good. Yesterday I had a lot of problems with snow packing, but I think anything would have had problems.
Oh, and BTW, Happy New Year to everyone!
Tom