360 build ????s

Also, the heads I bought were on a 340 storked to a 373. He said he put a 360 crank in, had a .490/.502 cam(brand unknown) 273 adjustable rockers, 9.75-1 comp. Ran 420 hp on the dyne. Idk if that was at the tires or flywheel. He did not say the car it was in. Just that it was a full steel bodied car. Nothing lighted up and ran 12.40s in the 1/4. Just sharing what I was told by him.