Put a Champion 526 radiator in a 71 swinger?
I'm fairly certain the clutch fan I ran prior to using this radiator would have worked with my 3-row radiator. If not, I know there was a shorter fan clutch that's been talked about on here that I believe was from a Jaguar.
Honestly, unless the cost is an issue, I HIGHLY recommend the 26" radiator with the Contour Fans. The opening on my car is still the stock 22", it doesn't matter so much - There really is no reason that you'd have to open it up.
The width they give you is with the tabs. The tabs are only above the framerails. As you can see, it fits fine. I didn't modify the support other than drilling holes for the radiator...like I said, I put a paint stick underneath for clearance when I was marking to drill the holes.
If you PM me your email, I have a PDF on what you need and how to wire and set up the fan controller. The dakota digital controller is held onto my heater box with HD velcro!