Radiator?

[Nmbr1GMfan]

All of our performance oriented street cars that are around 10 years or older get swapped to an all aluminum radiator (doing 2 now). They tend to start leaking where they clamp together, personally I wouldn't chance that on a race car. Too easy to crash if they blow out and cost too much to travel to races and risk a leak that could put you out. Just my .02