STAINLESS STEEL SLEEVED MASTER CYLINDER FOR YOUR CAMARO, CHEVELLE, CORVETTE, ETC, ETC. WE USE 304 STAINLESS STEEL TO SLEEVE OUR MASTER CYLINDERS. WE HAVE FOUND THAT THIS WILL HOLD UP AND LAST THE LONGEST. WE CAN DO YOUR ORIGINAL MASTER CYLINDER AND SEND THEM BACK TO YOU. SEE ORIGINAL SECTION FOR FULL DETAILS. IF POSSIBLE WE CAN JUST REBUILD AND RETURN YOUR MASTER CYLINDER IF IT DOES NOT NEED TO BE SLEEVED. WE ALSO HAVE SOME STOCK ON ORIGINAL CORRECT CORES SO CALL FOR FULL DETAILS. CALL FOR AVAILABILITY OF US, WT 309 M/C.