Head Recommendation
The W's are still what everyone aspire's to.... if it's flow #'s the W will flow more then what the aftermarket has per anything cheap bolt on....
So instead of spending money to start below where you are at now, just have those heads massaged correctly...
Any of the other W's as in 7,8,9 are and will flow well into the high 3's touch 4's if you want flow #'s... then you have the RP 9 also...
Like i said my friend is in the 9's, smaller then you, by 100" and not a W