I have had many dealings with Smith bros over the years and been real happy with them.

Were it me i would call them with your cam specs and pressures and ask them if what you have will work..

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, low 10.30’s 1/4
1.41 best 60 foot
6.56 at 104.17