Quote:
8" without a doubt. Especially considering the motor you bought. a "tight" 8" converter that stalls 47-5200 would work well.
Good advice 
Probably makes sense to get an 8 inch convertor. That way I only have to do it once , if it works. The more I really look at the amount of driving I will get to do, maybe I shouldn't have to be quite as conservative  
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
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