67 cuda upgrade... what do you guys suggest?

The slant car came with 9X3 drums on the front which really aren't adiquate for the V8.
Neither are the torsion bars or the rear gear ratio.If its her driver and she prefers automatic trans thats the way to go.
To do \6 to V8 right you'll need everything from the radiater cap to the rear end. I dont mean to sound discouraging. I'll help you any way I can.