have a 94rs with a 98 gsr swap with jackson supercharger i just bought it of some guy and he had a p72 witha skunk 2chip in it and it wokred for a while with the superharger but it fried he thinks cuz his was made for all motor so some say to geta stock p72 for the supercharger but i had other say p28 so i dunno wut to get any info would help thanks..