That would be a direct bolt on for you my friend. If you can find a blower of of a 94/95 if would serve you a little better as they are a more efficiant blower. Either way, 89-95 will all be a direct fit
You will need the correct inlet plenum for the supercharger you get. The 89-93 models use an oval style inlet plenum while the 94-95 use a larger rectangular style. One style will not fit the other blower. So, if you upgrade to a 94-95 be sure and get the inlet plenum (piece between throttle body and supercharger) as well.
Along with the plenum matching the SC opening, you need to also watch the vacuum connections to the plenum, and EGR Vs non EGR. Easy enough to overcome, but there are slight changes year to year.