When we ran a full service chassis fab/turn-key hot rod shop a number of years ago, it was always useful to have threaded things around to weld into the frame for some kind of mount, etc.
Here’s a list of all our threaded things for your reference:
Ford
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Engine Mount Kit; Ford FE, 2 and 4 hole
C$195.00
Engine Mount Kit; Ford FE, 2 and 4 hole
For 352, 390, 406, 427, or 428 engines.