the decal says mugen for a pm7 which is an obd0 ecu. you won't want to go obd0 and it's probably some bootleg tune w/ a mugen decal...not really mugen.
you'll want to get an obd2b-obd1 conversion harness from www.boomslang.us and a socketed/chipped p28 and get it tuned for your setup specifically.
feel free to pm or call me if you have any questions.