[j's69stang]

i got a 69 mustang coupe that i just recently had the motor rebuilt. It got punched out .060, a 282 comp cam, 3 angle valve job, heads decked, flat top hyperuetectics, 10:1 compression, edelbrock performer intake, edelbrock 600 carb, msd ignition, hedman headers and 2 1/2 inch flows. the guy who built it said that it had around 240-250, can someone estimate what you think i have?
thanks