What else do i need to fit it in my 92 camaro with the old stock housing?

 

installation kit (seals, gaskets, etc.)

 

Speedometer gears - GM #8642620 and GM 25513052. I just oredered 3.73s myself. I didn't install them yet. But those are the speedo gears I ordered. They cost 10 bucks. If you are doing it yourself as I am you will need tools. Dial indicator and stand, ft/lbs torque wrench, in/lbs torque wrench, micrometer, and the usual wrenchs. Also if you have some miles or abuse on the rearend you will most likely need to replace the bearings. If the rear makes any noise now plan on bearings for sure. Good luck.