I think you may find a answer to your 352 question in the "Late V8" section on this forum or, one of these two Forums:
https://www.jalopyjournal.com/forum/
http://fepower.net/simplemachinesforum/index.php
I have a 302 in my '48 F3. It fit well with the rear sump pan. I put the middle of the pan over the axle, on it.
You might check out oil pan supplier to see if their is a rear sump available for the FE.