Hey Mike -- before I start, let me warn ya, I am very opinionated and persnickity about AD trucks. I think they should be period correct in every aspect. If it were mine I'd bore and stroke the 235 1/8" each way. That gives you about 280 inches. Then get the wayne horning 12 port head set up, and build the rest to match; ie, wiseco pistons, balance the rotating assembly, 3 strombergs, et. There is nothing cooler on the street than an AD truck with a screamin' hot 235 unless it's an AD truck with a screamin' hot 261, but the 261 is pretty hard to find. It's your truck, so naturally you have the right to do whatever you want with it, but I hope you'll at least consider using the period correct motor, and like John said, the old 4 main bearing engines don't get along well with blowers.
Just my 2 cents worth bro,
Boo Radley
