So im new to the AE86 i have a 20v swap Nd my slave went out original owner said it had a T50 tranny if so how would i know and can i get this slave cylinder at a local parts store??

Advanced auto..

Rockauto.com

here try this guy
i get parts from them fast shipping to free in usa
viewtopic.php?f=22&t=1957

the sr5 and gts slave cylinders are different. gts has it on the passengers side, some people have done the swap and used sr5 trans & bellhousing

Thanks everyone.....is the one on passenger side is that a t-50 tranny as well ?

yes, it can be, just sr5, youll want to wrap the header if that's the case, or build a heat shield.

Make sure you have a picture or spare part for reference, I've gotten the wrong slave cylinder sent to me before. (needed GTS received SR5)