Radiator and fan clearance stock 66 Dart GT with 225

Hello All, I have replaced my broke and leaking radiator with a Champion C6566 aluminum radiator. Apparently the two and three row radiators are supposed to fit without modification. Well, the 3 row doesn't because of the fan clearance, not sure the two would either. The one I purchased is the 3 row.

Is the spacer required for the fan, with the spacer removed I probably have enough room. Or perhaps I can use a different style fan? I'd like to stay away from electric fans. I have a 66 Dart Gt with a 225.

Thank you