Re: novak or advance adaptors, which is better?
Too many times I've had to re-machine, move holes slightly, shim or machine down the thickness of Advance adapters. If you do use them, double/triple check all dimensions. They seem to be a bit sloppy on accuracy. Their bellhousing trans adapters usually require offset pins - they have trouble getting the big hole in the center.
Novak seems to be better - everything went on the first time with no problem, but they don't make as many combinations as Advance, so sometimes you are stuck.