ive seen q-jets on 11-12 second cars its all in the tuning you just need to have LOTSA patience or the know-how to tune a q-jet, hell my friend jade knows how to build a q-ket and smack in on my car and it'd run just as good with it as it does with the holley. like i said its all in the tuning. i had a q-jet on a 79 malibu wagon hey it got 23 mpg to seattle