Depending on the cam, compression and how much air that carb is getting in there it could be anywhere from 275 to 310 to the wheels IMO. The Edel heads are not the greatest, they are not the worst either. I made 300/325 on a set of Performer RPM heads in my 95 that was just a stock rebuild with an OTS cam and ported Cobra intake.
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.