How much est. HP??

I built a new stroker, 383 using 75 CC heads 1.6 2.02 valves 8:1 CR running a B&M 144 teflon supercharger @ 8PSI at 5000 RPM
It runs an MSD 6, pro billet Dist. blaster ss coil and an edelbrock 750 CFM. thorley headers 2-1/2 +- Diameter with 3" exhaust - flowmaster muffs. - given the specifications - roundabout what type of HP do you guestimate that I am putting out??

what cam do you have in it?

I am running a 268 comp supercharger cam, not 100% on the spec's, but it is specially ground for a supercharger - stock not a custom grind.

roughly 400hp @ 5000rpm without knowing cam lift and what type of liftersbelt gear ratio, etc.