I have seen the Novarossi 12-3ct run with the 2630 pipe and the header that come with it at the great lakes race. That set up would of made the lower B main in 1/8 4 wheel drive I can't remeber how was driveing it or what car it was just know what the motor and pipe was couldn't beleave it was not mod. I saw some of them on E-Bay for sale and they where at a go price