If you ever get into stage 2 motors the Regal history doors will really open up for you . I have purchased engines from Bobby Labonte and Dale Earnhardt that had plates on it with the number of races and rebuilds on it. An aluminum 218 INDY motor from Bill Tempero. Engines from Hank Parker racing and Elliott Forbes -Robinson ( road raced a Buick Regal ). My offcenter 4.1 was originally a Pike Peak Challenge motor. The little V6 has made its mark in every form of racing. It may not have dominated but I'm sure whoever raced against it with a V8 couldnt understand if he ever finished behind a Buick V6. Regals are still awsome.