My car runs a normal temperture of 217 . i know that is high. it has a new water pump and thermostat so im guessing a new radiator is in the future. Several questions. Any specs for the new one that i should be aware of. and what is a good source? Is it as an routine job on the SLS as it is on many other cars? Anything else i shpuld check that would affect the temp before I get the radiator? Thanks Jim