As Chris said, exhaust is a must anytime you start adding intake performance.
The stock injectors for the 94/95 were 36 lb versus the 30's in the oval port blowers. The fuel pump was also a little bit better but you should upgrade to a 190 lph or 255 lph even better.
Putting a '94 - '95 supercharger in an '89 - '93 is easy. All you need is the late model supercharger and matching intake plenum.
I put a '94 supercharger on my '90 without working on the exhaust or upgrading the stock injectors. There was a nice increase in power. But, it didn't take too long, less than 1,000 miles, with that setup before the headgasket on the right bank gave out.
Before switching superchargers, get a free flowing exhaust.
Eddie
'90 5-speed SC
'97 LX sport