I had cooling issues with the 22" that came with my car, but it wasn't the right one to begin with. Come to find out, it belonged on a small block car from '65, so it had to go.
I tried to locate a correct 22" for the big block/hemi cars, but of course, those are rare as hens' teeth since all the resto crowd gobbles them up and pays high dollar for them.
On a serious budget here, the Glen Ray stuff was out of the question, too.
I was scouring the web one night for a deal and ran across a 26" Spectra Premium 3-core that was said to have "damaged packaging but excellent contents"....
for $43!!
I figured what the hell, it's all brass, I'll gamble on it and bought it.
That's where the cobbling began.
As others have said, I did not enlarge the radiator support opening; I figured I had a 3-core and that was already better than the factory 22" one anyways, so surely I could get it to work even if some of it wasn't getting direct airflow.
I did not use the factory drivers' side bolt holes, but rather drilled new ones for the both sides (this thing is a driver and the radiator support isn't perfect to begin with); I had to do so to get the radiator more centered both vertically and horizontally on the fan for the next cobbling, which was the generic Mopar 26" shroud I found for $15 new!!
Still haven't figured out the application on that, but I think it's for a c-body.
Anyways, it also had to be modified a tad to fit, but in the end, I got a lot better cooling for chump change basically.
It doesn't seem to matter about not opening up the hole in the support and the car runs 180 degrees when it's hot outside, 170-175 otherwise.
The things we do on budgets...
Edit: This is the radiator. Come to find out, it fits c-bodies too:
https://www.summitracing.com/parts/SGT-CU332/
What the heck, it works....