good aftermarket radiator?

Hello poeple,got a qustion who makes a decent radiator that would fit my 65 dart gt? I had the stock 22' re cored last fall (2 row) & its been doen ok thus far until yesterday. If it sits idling for a good ammount of time she will creep up twords the H on the gauge (never.did that benowadays fore) then once yer moven again it'll start comen back down. There is not a shroud on it I'm sure that would help but it wasn't even really that hot out yesterday. I've had this issue before with other cars & a after market aluminium radiator solved it but now i think i may need one for my 65 now. Kinda burns me brand new core can't seem to cut it now. Give me some names of proven replacements please thanks!