Makdaddy
I am Dysfunctional
I built my own fan shroud with dual 10" on the car a while ago. My temps went way up there like urs did. I removed the thermostat and it really didnt make much of a difference except slowed the heating process doen a little. I put the stock fan back in eith the thermostat removed and it stays at 152* fully warmed up in 90* in ambient temp.
Install the stock fan back in and see if your issue goes away.
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I may have to order the GT500 fan Stock fan will not clear the turbo with the Zimmers hot side, Unless I move the radiator, I really dont want to do that.