22” or 26” Champion ? Can’t decide

73 Duster with warm 360.... I’ve put in too weak of a radiator in years past and I don’t want to go through this especially on engine break in coming up. I’m not worried about mounting holes not lining up. But I don’t want to butcher my lower rad frame on the car. Drilling holes is one thing, bashing rad support and sheetmetal is another. Has anybody got one last word to say about this? Need to order fairly soon. Thanks.