904 Trani

Thanks for all the input. Is there a specific rear drum that allows the 4 friction/3 steel setup instead of the 3 friction/2 steel setup or is it all in the piston/pressure plate thicknesses. It seems a bit senseless for Chrysler to mfg different rear drums for different setups. It seems more plausible that it is the parts inside the drum. I can have the piston and pressure plate milled like I did for the front clutch (0.050) but I would need 0.125 total milling and that seems like a lot. I'm a little nervous about milling .050 off the front drum pressure plate considering warpage concerns. Any experience here. I'm not opposed to purchasing a new rear drum, just not sure how to find what I am looking for.