Hey all, thought i'd ask a quick question... Have many people had trouble with there 99 gc8 cracking a plastic tank on the radiator.. have been losing coolant and have found what I think is a crack at the top of radiator, on the plastic tank.. took it for a lap with boost and pretty sure thats the prob as its sprayed coolant.. does anyone make ali rad to directly replace this unit.. any other idea's appreciated..

Jon