A833 on a 90's 360 magnum engine

A normally aspirated SBM?
That would be a tall order to start with, and not at all 3.55 friendly. And I guess you are gonna tub the 65 then, and at least back-half it?
I am designing it as a 60's style gasser, so I plan to radius the wheel wells. It has a 3.73 spool in the rear, SS springs and ladder bars. I'm only going to run 275/60-15's on the rear, so they may stick out a little. Back in the day they got a lot of Hp out of those engines, without the benefit of aluminum heads with 190cc runners out of the box.