Radiators in an A-body?
JSD Auto G126
just fits between rails, maybe 1/2" gap ea side at most
fills the core opening, plus a bit
Holds about 1 gallon more than "stock"
your original battery tray may not fit (didnt matter for me)
iirc it was about $120.
made a simple saddle btwn the rails to support the bottom, with rubber cushioning.
nothing is bolted thru the rad, just lightly clamped in place.
72 demon 0.060 over 360 zero deck ported heads .540 solid cam
hasnt run over 195* in traffic on a 105* day without a shroud and a 10% coolant mix. (auto in neutral at lights)
About 2 years running it and I'm happy.
I have a stock F body (mopar) shroud modified to fit, but apparently do not need it, so...we'll see.
(yes, it says "chevy" on the box)