Have my original 47 chevy 4 speed. This is not the SM420 that was available in 48 and latter. It's a GKT-134. I am having issues finding a rebuild kit for it. Do any of you know of anyone making this kit or if a can send the parts to somebody and have one made for it? I'm not looking for the gasket kit I'm looking for the gears and everything. I have not torn into this transmission yet but I would like to know what I can do about it before I do.