guage cluster

will an 90 or 91 civic si guage cluster will work in an 89 si?????

with some slight modification it will.

what's the difference between them??

i think you need to re-wire the plugs on the connectors, but i may be thinking of something else, so wait for someone to give you the 100% positive answer.

the shape is different

i have been told by many that it will definately not fit at least not directly hard work to make it fit i'm guessing but ask melt he knows way too much. i owned an 88 and now own a 90 and the size of the guage hood is much larger on the 90-91.