[sllib]

Brainsboy;
Back again. I wasn't home when I posted above. According to "High Performance Ford Engine Parts Interchange" (buy a copy) the 400M crank will give you your desired stroke, and the main journal size is just a BGH under the 351W's. Also, SVO makes a 351 crank but it's listed as a raw forging, which means you would have to have it offset ground at a shop. As 66ls427 said, the crank is offered by tons of companies; just do a Google search on the Web for it.
Bill Stradtner