FWIW, I have emgo 54mm pods and emgo shorties on wrapped headers. I'm using 42.5 pilots, 135 mains, 1 up on the needle and 3 turns out on the idle mix. Seems to be running great, plugs are not showing lean and I've had the RPM to 7500 with no backfire. Mine is an '81. Hope this is helpful to some trying to tune.