A 50 Ford pickup has two fore-and-aft springs and an I-beam axle. The trouble with this setup when doing away with the fenders is the fact that the axle is just about centered under the engine, giving an awkward, front-heavy look. Just opinion, perhaps, but fenderless rods look best with the axle out front of the engine, with nothing further ahead of it, so cross springs or coilovers work best. Since you don't have the front suspension anyway, why not go for a Deuce-type setup?