My speedo is WAY off and it's finally bugging me enough to fix it. Can somebody save me some time and help tell me which ones I need? It would be greatly appreciated. I have 4:11 gears with a T5 tranny, and 275-50R-15's in the back. Thanks!

Try a search because this gets covered a lot. I take it you have a 91 RS? Model year depends on the gears you get as well.