MPG anticipation?

Assembling my 3100 lb 69 Dart hoping to have it running by July 4th, curious as to what MPG I can expect.

408 stroker (Magnum) .574 cam 1.6 rockers, .298 duration @.50 .236
-dynod at 484HP, 490ft/lbs, half filled block
-roller cam, hyd lifters
Edel performer heads, work done at Modern Cyl Head
-flow #s
intake: 245/.400 exh: 193.8
intake: 276.3/.500 exh: 217.1
intake: 293.2/.600 exh: 232.0
intake: 296.8/.700 exh: 238.2
950cfm APD carb
TTI headers
ATI converter, 10" 2800 stall, plan is to run 26.5-27" tall tires and 3.73s.
904 trans, with steeper first gear

I think HP and torque numbers have room for improvement with solid lifters b/c head numbers look really good I was "told".

Will run on 93 oct with race fuel or fuel additive as supplement.

street car, will see track twice a year.

MPG thoughts?