360 magnum 4barrel vs 273 2 barrel

i got my 65 dart 273 2barrel carter carb i change it over to hei electronic ignition it has a 2.93 single trac 904 auto stock i removed ac unit it has p steering it runs good 25000 miles on rebuilt motor its stock manifolds with 2 inch duel exaust cherry bombs out the back . i got a 93 360 magnum with a air gap 600cfm eldebrock i put on fuel pump snub . the magnum was put together for a another car but that cars not ready can some one tell me what the car may perform like after i swap the 273 out remember it s stock manifolds im only trans planting the block plus also can i put a 360 balancing plate on the 273 904 torque converter any info on the change over would be apreciated any info on the balancing plate would be apreciated