I went to go get a new rear differential seal for my brother's 89 RS (he decided to buy the one I'd posted about earlier for $1,900). But all the parts stores I've tried don't carry a "rear differential seal" but they do have gaskets for the rear diff. Is this the same thing or do I need to try and have the a dealer order the part? Thanks, Joe

 

It's the same thing . Man , glad to see you got the car !!!
Welcome to the club !

 

Thanks for the help Wayne. I've actually already got an 88 Camaro, my Bro decided to copy me.