hello; from 68 on all ford pick-ups used the 360 with a 2bbl carb. you could have ordered one with the opptional 390 with a 4 bbl. if it does't have a 4 bbl, it's not a 390 unless it's been changed. because it's to hard to tell just by looking, everyone tells you it's a 390 so you'll buy it. it's just like every small block chevy is a 350 4 bolt main untill you check the numbers, and then they still swear it's a 350 4 bolt main. sorry but there's not many honest people out there today. hope this helps. wayne.