I think I would make sure you have disc brakes in the front, and keep it stable either by better than stock torsion bars/add a stabilizer bar.
For the drivetrain, I think I would like a 750 dp Holley on it. Obviously, your not going for gas mileage here.....
Yes, I have small bolt pattern disc brakes up front and drum in the rear... The torsion bars are the original slant six ones, but with all the aluminum parts up front I think I am almost the same weight in the nose...
Although, I probably should put new ones on anyhow... The front end is all rebuilt with new parts to stock configuration, besides the torsion bars...
I also have a torque strap on the motor...
Stabilizer bar? Like a sway bar? I have one that came with some other parts I traded for, but haven't thought much about it yet...