Personally, i dont see a 59 degree head(except the latest and best indy head)making an honest 700 ponies, based on the old "riders dyno" benchmark.

I know w5's wont do it, w2 wont, the b1ba and eddies wont, so that leaves some sort of 245 indy head as the only way of getting there

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