Jrichber95GTS

I have 3.73 gears in my rear end i was wondering if there is any way to tell what gear i need to get the speedometer right with only changing the one on the side of the tranny and not the one at the end(dont feel like taking tranny back out). All i can really say is at about 40-45 my speedometer is like exactly 10mph off. Any help really appreciated. Thanks

Bubba 95SN

To get it right on 95 you need both drive and driven gear. Someone may have idea of close not exact.