maxnix wrote:I wouldn't trust this clown to fix a flat on my bicycle.
Maybe so, but fighting is a real pain, and small claims court looks kindly on people who try to work things out. Given explicit instructions NOT to use a 90-93 engine in the swap, she has a lot of leverage.
Before small claims court she will need to document the current problems. The best way to do this is going to a knowledgeable source (T-3 or infiniti dealer) tha the court will agree is a knowledgeable source. Pay them to document the problems, and estimate the cost to repair. (Inifiniti will give you a more generous estimate). Then her own mechanic will have to remedy the problems... maybe settle for 1/2 the cost of repairs estimated by the dealer, and then take it to T-3.
Since you will ned to do the documentation for small claims court anyways, just get that done now. With documentation the mechanic will know you mean business and may work out to the best result through negotiation.
Good luck, and remember to document first, and negotiate from strength second.