Mild 383 build
So it sounds like your build is gonna be a stock ish mild hop up.
So basically rebuild what you got, don't worry about the 0.70" over, sounds like you got headers, do you have intake and carb ? If not probably find and air gap or similar, sounds like you got a 3000 stall and 3.73-4.10 gears so you got to pick a cam and cr to work with that. So to me the question should be what cam and cr will work with what you got. So probably something around 224-236 intake duration on a 108-110 lsa with the appropriate cr.