We must be inputing different numbers for our components.
This is what I have for overall:
401hp @ 6000rpm and 392tq @ 4500rpm
This is my flow data on the twisted wedge:
This is the cam data for the B303:
I got all these numbers from the manufacturer's websites. Note that a lot of the values don't match the included files that came with dyno2000. So if you're using those, then that's where the discrepency lies. I suspect those ones to be in error.
Also the stock 302 with just the B303 cam and exhaust gave me 291hp @ 5000rpm and 358tq @ 3500rpm