Ok so I dont know anything about tuning. I want a reprogrammed pcm for my 02 GT. Theres a guy selling a hpt reprogrammed pcm. he says it has the hpt base tune on it.

PCM came out of a 99 GP GT with 3.29 gears, mods include raised shift points, raised trans pressures, rear 02 code delete (P0420), MAF Tune, and a raised speed limiter, after a simple case learn this pcm should be compatible with any 97-03 with the exception of 01
My car is completely stock. Would this work for me? Would it **** anything up? thanks for any help.

also im thinking about getting a HV3 would i need to change the pcm at all to run it?