Better cooling mod?
 

Which cooling mod will be the best bang for the buck? The Shelby racing radiator, or the Afco heat exchanger with dual fan? They're within about $100 difference. I know the heat exchanger will give me a lower intake temp, but the radiator will help the engine stay cooler and help against detonation. So which do you think would be most helpful? I also have the 170deg thermostat I'll be running as well.

Nitrous ;).