Whats Better

Yea I think I will use the manual box for now. When I am done with the 383 it should weight close to the same if not less than a production small block. Plus moving the battery to the back and anything else I can think of the car should have better weight distribution than a production small block car.
Aluminum heads or what? Just curious how you are gonna drop 90lbs off an engine. Not doubting it can be done, just wondering how

273-340 V8 525

361-383-400 V8 620