I would think a 650 horse deal wouldnt be out of the realm of possibility with well done W2 heads and the associated goodies( roller, compression, etc) Not sure what a big block could make....
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
