Broke down and installed a PCV valve. Put 100 miles (50 miles each way) on her Wednesday on an 85 degree day. Temp never got above 150 degrees. I'm pleased with that, but guess I'll break down and stick a 180 thermostat in there. Right now I'm just running a thermostat shell with an electric water pump and an electric fan and aluminum radiator. I've been keeping an eye on that temp guage while breaking in this new setup. First trip out of town, now I'm confident enouth to make it to some cruise-ins this summer.