How much horsepower would be added?

I have a chevy 355 and I wanna put a 3.75" stroke stroker crankshaft in it along with the connecting rods and 22cc dished pistons, I was wondering what kind of power i would be adding. The motor also has a hydraulic flat tappet cam and lifter set from comp cams duration 292/292, Lift .501/.50, 1 5/8" headers, purple hornies dual exhaust, aluminum edelbrock single plain intake, 600 cfm edelbrock carb, electric fan, HEI distributer, double roller chain, and 64cc high flow double hump power pack iron heads. All this in a 78 nova with TH350 and 2.34 rear gears. the engine is from a 1970 A body and had stock 300hp and 380 ft/lbs torque. An accurate estimate on horsepower after these mods will get 10 points.