I have a set of ported(intake and exh) 69-70 351w heads On my 302 with a ported out lower cobra/Gt40 and cobra upper that has 75mm TBportmatched (Basiclly Gutted) With an Fcam. 19# injectors and a 190 pump. I pulled a stud today on one head and im trying to decide if i shoud keed this set up or go back to my gt40s and 40 upper/lower with the same Tb...OR put screw in studs keep these heads and change uppr or lower intake.....Makes sick power up top (obove 2500-3000 but sucks down low!! Lol Not changing cam OPINIONS PLS!!!