Take the '58; the '53 is a splash oiler with babbit bearings. If you already have a complete 235, the '58 may yield a usable block and head, once you have it disassembled. Disassembly may be hard labor, given how much rainwater appears to have preceded you.

One hopes that they aren't wanting much silver for that iron. . . .

God's Peace to you.

d
Inliner #1450