What I have is a 67 barracuda notchback , auto trans, 3.91 posi, 29" drag radials. Looking to build something to push it into the 11's, but be very streetable and run cool. I could build a stroker, but is it worth the money if I'm not looking for a 600hp motor. I see a lot of different head choices out there for sb mopars and was looking for what combinations really worked.