Champion Radiators in an A-Body

i bought a 26" 2 core for my big block duster by mistake. i didnt know a 3 core would have fit. i used it anyway. i just drove it 3000 miles to florida and back. it was hot as balls. i was pressed for time i put the rad in and a 180 themostat, it went over 160 2 times in 10 days. once in stop and go traffic and once in the drive through at mc ds. it was close to 100 both days, it still didnt go over 200. i dont even have a shroud yet. they should have all rads with either side inlet outlet.