Ask TRBO VNM!!!!
LOL, actually, I didn't know the answer to this. He did pm me, but there are a few things I haven't done....
rebuild motor/heads(on these cars anyway, I leave it all to the builder)
tuning
rebuild trans
although, at least one of those is soon to be added to my list of "have done" and possibly all three.
My engine builder set mine up, but I have fr500 cams and the springs that were sold to me with the cams apparently were not correct and we went with comp springs on my setup.
I will be doing cams in a mach soon though. :beer: