I'm hoping for another 50-ish HP over my ported Shady Dell stage 2's; apples to apples, they should raise the powerband another 400-500 rpm, the SDII's were all done by around 6100 on my 414, with 4.56's I was out of RPM and gear by 1100' and that was on a part throttle launch check-out pass. To be fair the 4.56 set-up was intended for 1/8th mile. The SDSS's are great heads for the $$$ though, HUGE improvement over bowl ported/Vj'ed Eddies.

I swapped to the Airwolfs and also dropped the gear down to 4.10, also re-did the 904 to the low gear set to keep my 1st gear pretty close to identical.

Should be fun either way, net-net the Airwolfs were only a net $500-ish upgrade after selling the SDSS's.