I use the stock 72 style mc on my 66 did not have a promblem,had to replaced this year rear seal went out but all is good.I have used buick regal,chevy truck,they all seem to work well.
I am using the d44/lc3rd. But all the brakes and outers are D44 so I guess its the same. I also have the TSM rear disk. I use the stock 72 MC and it works great! I also didnt pull out the little valves or whatever they are on the MC. I have more then enough brakes.
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