Are you wanting to know only if the fuel fittings are the same, or if the lines will fit over the motor?
I suspect the fittings are the same, as to the length, I'm curious as well (350 should be shorter I think, but might have enough in them to work anyways) as my dad got a 454 setup for his 454, but the lines were no good on the donor truck, and 350 lines are everywhere.