[midniteblues]

I pulled fan shrouds and fans from Chevrolet vans they seem to fit sbc trucks just fine and let you use the bigger fan.
I don't know if they fit a bb though never tried since I used a oe bb shroud.

I also used a lwp on my BBC in and on the correct mounts and it pushed the fan way too close too the rad and the alt and ps pulleys were awfully close too the shroud. I switched too a correct swp set up since.

I saw others make it work though.
Electrics do save ya some real feel seat of the pants power though. I noticed this when I put Electrics in the Camaro and replaced the power robbing dangerous flex fan. It being a manual shift just at idle you can feel less drag on the engine.