New Cooling/fan question

You got a few other things to check my friend. Even if it's a Mr Gasket high flow thermostat (which it should be) replace it, I had a new one crap out only 2 days old. Second make sure that the coiled up spring is in the lower rad hose, keeps the hose from collapsing during high flow (highway). If everything else is good pull the rad and take it to a good rad shop and have it checked to make sure it ain't plugged. As a side note a shroud will only help when you're tooling around town not on the highway, the air that you're travelling through is pushed through the rad quicker than it get's sucked through, at least that's my opinion.

Terry