The motor seems to be runnin rough. I've got a '77 F150 with a 351 modified, what do I do to go about dropping that under the hood of my sprint?
you dont...lol. those 351m engines are not known for they're durability. on top of that, they're as heavy as a big block but without the power of one. they also have the same bell housing bolt pattern as a big block ford as well so you'd have to change the trans and everything. needless to say, it aint worth it in the least and if ur engine is just running rough, why not just find the cause and fix it???
