May need advice on 727 build

IRISH RT said
As per pics of front drums above, I had a measure up cannot see why I cannot use the 1inch bearing shell in the early drum as long as I use the correct pump support ???.

I haven't tried it but as long as you use the newer 1" support and the oil supply ports line up without restriction I don't see why it wouldn't work.

Make sure you use the right seals in the old style carrier as they are different than the 71 and up