The 351C can be a more peppy unit when running properly prepped 2V heads since the low speed port velocity is higher. They still need work, so in reality the SBF with aftermarket heads or Exploder heads is a quicker/less work deal. My backup 302 for the door car is an old 65 block, heavy TRW pistons, stock rods, 218/226 hydro Crane, GT-40 ported heads and and Air Gap intake. Makes around 300. Looks pretty cool with a tunnel ram and dual Edelbrock 600s on it too.
The 352 would be a good setup. Note that the FE motors use a 10.17 deck and the 351W is only a 9.5, so a more compact engine should that be a consideration. 302 vs 351W you need a different oil pump, pan, intake and distributor. Heads are same. IMHO if you wanted a compact little scooter, a 302 block with a 331 kit, GT-40 or AFR 165 heads and the appropriate roller cam would make a really nice package. Not necessarily real cheap, but good power, solid, reliable, fit in about anything including a Pinto LOL.