All mopar parts drag car, give me some feedback.

Well I have a nice brand new set of 225/55/15 and some 15x 8 black spokes I'm gonna try and fit on the back. Might have to move the springs. Yeah I've heard about those magnum manifolds. I thought only early year dakoka manifolds would fit.
If I could get in the 13's that would be respectable. Anyone know where to get a 340 grind cam? Yeah daredevil I am up by tulsa. I live about 30 miles east of tulsa.