PaFarmer, why don't you just drill 2 holes in the bottom flange of the front cover, and mount it like the 216? That's what I did. I put a 1957 235 in my 1949 3/4 ton Chevy truck. Worked great.
KT
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1949 3/4 ton Chevy


1953 3100 with 1957 235, T5 and 12 bolt 373 rear