-- That combo may touch the 11's with a decent stock replacement head. It won't go low 11's unless you have some impressive heads on it. Even then the tall gears and lowstall are going to hinder you. --
-- Agree -- Also, shed, all, unnecessary weight - rear seat, heater core & box. radio, possibly go to aluminum radiator, etc. -- 3.91 gears are streetable, around town. -- Low 11s doesn't come easy.
