Just got dads car back from 2 blow hg's and had the heads ported intake ported and three angle valve job...put RJC racing hg's on the car...now can't hold the car at the tree...have the s-10 wheel cylinders...what noew...has powermaster on it and not putting vaccum brakes on it...what next...car has the gt 32-55 on it with 50's ported wlbow 3 inch dp and no cat hooker exh...help