clutch fan too close for 3 row radiator on 360 engine

My 360 stock engine in the 67 Barracuda was running hot with at 2 core aluminum radiator so I decided to go with a 3 core Champion aluminum unit. Problem now is that the 7 blade fan with clutch won't fit, it's only got about 1/8" clearance. Is there another clutch available that's shorter? I'll need a part number too.