Issue with lower rad hose rubbing on suspension

It looks like your aftermarket radiator has the hose nipple too far outboard; but then, I don't precisely know where the factory BB radiator nipple is for comparison. But I used to have an A-body 383 radiator in my SB Barracuda, and the hose definitely did not rub the strut rod. It DID rub the ADDCO sway bar bracket which was mounted to the front of the k-frame, so I think that neck was maybe 3 inches toward the center. I did not have the oil filter to contend with, either.

My only suggestion would be to have someone weld on a new neck that had a tight 90º turn so it faced more or less straight up (slightly tilted toward the center and back). Then you would cut the hose slightly shorter, above the last bend — the vertical part would then be clear of the strut.