I've been running the IROC radiator for many years with an external oil cooler in my daily driver. Well it's not even summer yet and it's running 200-210 on the highway and around town without even running the A/C. That's with a 180* stat. Stock fan. Looking at an upgrade. It looks like several Buick venders are selling the same GN1 aluminum radiator. Anyone using this in a daily driver that can let me know how well it performs in this Texas heat? Any other suggestions appreciated as well.