I had a 302 combo with Thumper E7s with a spring upgrade, Steeda 19, Tmoss worked 93 Cobra, LT's and 19 inj's and dyno'd at 302 FWHP. Stock FWHP is 220 so I'd say those type of warmed over parts work. Was a snappy motor. It's the whole combo though... I can see your point on just adding the lower.