I had a shop swap my automatic out for a NV4500 they rebuilt. Now I need to hook up the hydraulics. They put a internal slave in it. I’d like to use a 92 master cylinder. There’s another thread on here I was reading, but it didn’t end with any solution. One post said the 05 and 92 masters have the same diameter master, which was encouraging. If anybody can tell me how they did theirs I’d appreciate it. I put a 96 dodge NV4500 in my 97 with the newer master that fit the diamond hole in the firewall, from Perfection Clutch. That was a pre bled assembly with the old external slave and the newer diamond snap-in master. But this Chevy project is the reverse, an old master with a newer, internal slave. Thanks