I have found numerous rads that don't cut it Buy a mopar heavy duty rad. I Have never had a problem since I went that way. 195 stat 90 degree'and 72 % humidity and 195-200 degree's idleing for 20 min. holding 3500 at speed on the road and still 200 degree's. The Mopar rads for the older trucks really work.
I had a motor home 3 row rad after market that did not work that good. i would see 210-200 at speed with a 195 stat Ok but not what I wanted