What temps do your 308's usually read??

If the thermo and fans work correctly and ambient temps are below around 85F, the difference is probably none during normal driving. It is when you run her hard or have to deal with higher ambient temps that Nick's radiator seems to really reap benefits. Of course we all know the original radiator can be gutted and refit, yet am not an enthusiast of using old technology on mass produced relatively modern cars (read: over 500 produced) when newer/better is readily available and worth the changeover.