What should my 360 run

no way to know,
but the DC Bulletin Book says that at
3500 pounds , 106 would be 3500/10.4= 364hp.
And that is predicted to go 12.5 with SuperStock suspension.
With street suspension and wrong gears, etc, figure another .6 to 1.0, so 13.1 to 13.5? Most of that will be on the launch, when the tires let go.

BTW, I got that Commando box too, with it's 3.09low. But I only run 3.55s now. I really really like it.

Never liked running on the strip for too long **** starts to break lol.
I got 4 runs in; only one completed. Nothing broke so called it done.