well if we are talking Mustangs, I think the 94/95 Stangs are the ticket, last of the 5.0, Tremek 5gr, 8.8 posi, 4whl discs, great looking body, and if you have to look like a newer model trade tailights, they look good, drive really nice, and even stock move pretty well, add a Kenny Bell blower with a little 5 lb pulley and instant animal with a 5lb you can still run all the stock fuel system etc.
they are dirt cheap now 6/10k can buy a nice one, trick is to find one that has not been torn up though, I sold my Cobra big mistake but found a puff vert and cant get the wife out of it.