How much HP and what do you think it will run.

It's going on a Dyno correct?
If so you'll have your data. You'll need to be looking at your peak torque numbers rpm and weight of car. The horsepower and weight can get you sorta close on a calculator. Then just make up your mind on which rpm you want to cross at and what your shift points need to be.
Chances are better 4.10-4.56.
I wanted to dyno it but my engine is one of his last and will be retiring at the end of the year. I’ve spent a small fortune on this engine to me and the wife has no idea how much I spent. Maybe I can change his mind to dyno it for me before he retires.