The BGC pipe flows well and is neat that it will fit under a stock cover but is heavy compared to a Houston style pipe. I have never seen a 2.5 version with the large cast elbow.
Buick body and Buick engine street car class. Must be capable of a short drive. Pro Tree .100 light. Winning cars return to the lanes after they run (no pitting). Card draw for each round. 1/8 mile. That is the basics.