15x10" 5x4" bolt Steel wheels

Im running 273 with stock heads gasket matched and cleaned up casting with 1.88 intake stock exh valves. 494 Lift cam, and two holley 450cfm carbs with 4sd. I drive the Car pretty hard but its not a daily driver anymore. I have found a few of the 8" mustang rears, im building a 426ci 360 so trying to set the rest of the Car up to handle my goal of mid to low 10s. I think my best bet is narrow truck 8-3/4 and cut and respline or buy used a body ones untill funds allow for something stronger. I have seen a 64 cuda running 275 60 15 but i dont know width and offset he was running. I like the idea of running 15x10 Steel wheels but if i narrow a Mopar rear i would like to run 15x10 keystone klassics. i was just hopeing the Steel wheels would fit while i do the mini tub and inboarding tje springs. Does anyone have a picture of how/where the front spring hanger goes? Can i use my stock one and just bolt and weld it to frame? The rear is easy, just drill and weld in sleeve.