Back in the day I had a 60 Panel Delivery. (The chassis, doghouse, windows and doors were stock F100. Ford only had to custom make from the B pillar back.
All the conversions kits for that year and the '53-'56 Pickups were for Chevy small blocks. I had a 327 in mine coupled to a 400 turbo auto and a Camaro 12 bolt positraction. For some reason keeping it "Ford pure" was way too difficult and, as Masteratarms93 says: "Those things work in everything". Including motorcycles.
This was way before the "Boss" or "SVO" powerplants
My 4 bolt 327 kicked some serious butt and it was a rare body style.
At any rate, I'm looking at a small block (Ford) conversion myself but, if I run into anything for a 283/307/327/350 I'll let you know.