Alot of Z's are also with second or third owners, who have . . . shall we say, less discretion, lesser budget? You can get a Z for $20k now.

GTR guys likely spent nearly $80-100k on the car itself, so they'll have the resources to spend on parts and build

Man you guys can dig up some old dirt. As for the other 2 issues from in the past. Hard to say what happened. I don't think you will get both sides of the story and can make a solid decision. I have seen folks that could tear up an anvil. In my experience, anytime you mod something, be ready for stuff to go wrong. It is not a question of if, but when.