I had my motor rebuilt, forged rods, pistons, all new gaskets, as well as plugs. Traded in my old blower for a new v2 s-trim. Car is running, my guy said It was jumping to 220 degrees after steady driving for 10 minutes. He flushed the coolant system four times and still jumping to 215-218 degrees. He stated that after sitting for 5 months there could be coolant that has crusted over and is blocking the flow. He recommended a new radiator: Which is a good brand to go with? He recommended Steeda? Thanks for input.