K&B had a bin full of those .40 size tuned pipes last
time I was over there in Feb. I don't know about the
header....
....I'd wring every last RPM out of that K&B .40....
....might suprise a few folks....I stuck a tuned pipe,
and an OS carb on a K&B .60....and it screamed....
Dave.
....Rev on my Brothers....