A man in Bozeman changed the rods in his fast 4 and used inserts also found some tractor engine mains would work. line bored the block and all worked well.
Cowboy; Vern Tardel Has a kit to change over the early 21 stud engine to insert bearing . its about 795 and that's not a bad deal! The '37 block with the hi pumps would be a less expensive route to go. Ol Deuce
I'm new to the club ,but old in the car world my question is what were the years the fast 4 made and what car styles was it installed? Thank you R.mead