Which fan shroud?

[Blue72slab]

I am finally getting my 72 on the road again and need a fan shroud that fits. It is a factory a/c truck that originally had a 400 (long gone). When I got it it had a 350, the a/c has been removed but had BB 72 motor mounts. I changed to SB motor mounts which slid the motor forward a bit and must have dropped it because the fan now hits the bottom of the shroud. I got a set of correct pulleys and brackets and bought a short water pump. It also has power steering. Will any SB shroud fit correctly or do I need to get an a/c version? I plan on putting an aftermarket a/c system in when the time comes (unless that is a bad idea). They just seem to work well but are a bit pricey so have to save up some coin. Thanks for the help.