GypsyR

Hmmm. I don't mess with Clevelands. The last ones we got here were in 1974 Torinos (much like your Falcons) and they never came in trucks.
I'd guess the same would hold true. We reserve single planes pretty much for drag racing. Don't see too many 4200 pound Broncos drag racing. An all-out off road racer might make use of one I guess. I still say a Stealth, but given a C's breathing capabilities, maybe a 650cfm carb where a W would be happy with a 600. Clevelands can rev higher and better than Windsors (stock). I never paid much attention to port matching since I always grind them to gasket match myself. I've seen some pretty crappy port matches on OEM Ford manifolds though. And I hear the cheapo imitation Edelbrock "Crosswind" manifolds are pretty awful. I'm more interested in runner layout and plenum design.
Any help?
BTW, is your Bronco two wheel drive? All our North American ones are 4x4. Us homeboys never got the 2wd option in "big" Broncos for some reason.