What's the biggest radiator support opening?

[375inStroke]

I think I've seen radiator support openings on mid '70s A-bodies, perhaps with a 318 and A/C, that had bigger openings than earlier ones. Is this true? Both my '69 Darts have 22" openings. Is that as big as they get? One's a /6 and the other is a 273 with A/C and A/T.

 

[dusterdon]

All A bodies had 22" radiators. It is rather simple to put a 26" radiator in if you need the extra cooling. You'll have to drill mounting holes in the core support and then measure how much of tyhe core support you need to cut away to match the new rad. Use a grinder with a cut off wheel. Takes 5 minutes. Thats it. I have one in my duster.