the reason i say that buying a bronco with a 351 would be cheeper is bcuz im buyin one for 400 bucks in a week or so, i see em on craigslist for like 1 grand all the time, but have fun finding one with a 351 winsor, only like 27% of broncos had a 351 winsor in em. and if u do decide on the swap, ur truck is gonna haul balls and get bad gas milage when ur in the pedal