Edouard: You are right, pics 3 and 5 are the same car, but it is the one with the Chevy small block. I spoke with the owner about 5 years ago but lost track of him. It was in Arizona. The yellow one (first pic) is the one with a Buick V6, but it is a supercharged 3800 series 2 from the late '90's. Spoke to this owner too, at BCA National meet in Ames. Heckuva nice guy, and very skilled.