Put a Champion 526 radiator in a 71 swinger?

Amen, Thanks to Goldduster318 I'am looking at getting the CC374 for my Duster in the next month from Challengergary!

Only question I had was if there were any modification done or needed to get it in with the stock battery tray,or if just barely squeeks into position.

I read some people needed to clearance the lower rad support/cross bar tho?

I'll be grabbing a Mercury Mistake, or Ferd Contour Fan set from the yard soon as soon as I get the chance,

You should be able to just use a 1/8" spacer to space the radiator off the lower support brace, then drill new holes in the mounting ears for the radiator. That's really the only modification you need to make, the stock holes in the radiator mounts aren't in the right place for an A body.

Well, if your car wasn't originally a 26" radiator car and that's what you bought you'll also have to drill some holes for the mounts in the radiator support as well. If you already had a 26" radiator, you just need to drill the additional holes in the radiator mounting ears.