Rad and fan replacing

The small radiator of the Dart is almost scrap, and i am running a none-clutch fan without a shroud. So since I will have to replace the, I was wondering if something else would fit there (radiator width/clutch fan/shroud). Is there a model of car that had a rad close to the big A-body rad (26" I think)? Maybe the C-bodies with a small-block?
I would prefer something close to the 26", because I plan to have a more powerfull engine in the future, so I would prefer to buy parts only once?