awk is right, this pipe is in a pipe sootout in the June 1996 3&4 Wheel Action. It was 2nd with 19.7 hp at about 6600 rpm. the stock pipe is17.2 hp at about 7000 rpm. The LRD pipe also used a 30 pilot jet instead of the stock 32.5.. CAN THAT BE RIGHT A SMALLER PILOT JET? It also used a special LRD needle in the #3 position and a 290 main jet...
I usually see people run 290 mains on stock engines, but it obviously varies. Right now I have a 320 main in mine, but then again I am running a Vito's needle which has a much steeper taper to it so that effects my main size somewhat as well. I think a 30 pilot is a bit steep personally. You could just thread the mixture screw out. It could be believable though. Mine had a bit of a hesitation on it around 1/4 throttle until I advanced the timing which probably leaned it out just a little more to make it more smooth on the stock pilot. Hell I might have to go back up to my 33.0 pilot.