I built one 20 years ago... super easy swap if you have an automatic truck already.

The truck I have now is so complete I would really hate to pull the 4 for a 360 like the '86 I had before.

The other truck with a mild 360 ran 12.20's at 116 with the stock rear axle (welded) and stock brakes and shifter... pretty sketchy to get it to stop....LOL

It weighed 2550lbs with the 360 in it.