Machine Work Required for Forced Induction

I got a price today for a 360 build. This is with 9.5 compression, balanced, cast crank, KB pistons, 284XE Comp Cam, ported heads, gasket matched, 750 Holley Carb with some modifications, decked and I mean done right quality work here. Carb to oil pan, roller rockers, with fly wheel for $4800. The motor would produce 450 to 500 horsepower just on motor. All I would have to do is install the motor and fire it up after I put on some valve covers. I was going stroker but the parts and machine work went flying past $5000 easy! Out of my budget right now. I guess it can be done with forged parts under $5000 but I would have to do some more checking. I would really like the fellow to do the assemble because he is good.