F-body rad. I have a front mount and a F-Body rad with no problems. They are $100 new at Autozone.Kenny's issue is he has a big front mount IC. So you need some heavy duty radiator in there to keep them happy when playing on the streets on a hot summer day! B-Cooool!
Oh it's running hot. That cruise night we went to when he opened the hood I wanted to break out the marshmallows and just dangle them over the engine they would have cooked! Fans are working I checked that while we were there. As soon as he turned the key they came on full blast. That radiator sucks he has! My 86 was parked next to him and the difference in heat coming out from under that hood was unreal even a half hour later!Kenny's radiator in his GN is stock style however it's BRAND NEW so it should be flowing well with a quite large dual electric fan that covers the entire radiator. I would make sure the stat and fan relay is working and the temp's are showing accurate before I assumed the car was really running that hot....especially since he's running E85 too.