Whippled 525 EFI delima

[ozarkdevil]

I have a pair of Whippled 525 EFI motors that I am getting freshioned up at a very reputabil shop. When it is all said and done the motors will have a complete over haul minus the cam(he said didn't need) it will be .060 over with new JE pistons running about 6-7 lbs boost, he thought 740-775 HP on dyno. My issue is I want to get rid of the closed cooling system but I want to run a thermostat. I was told to do this we would need to reenvent the wheel. I have a pair of cross overs with the pullie to keep my surpentine belt but still no thermostat. I am scared that no thermostat will affect the fuel curve since the water in Iowa doesn't warm up until July- August. He said he could change the computer to do what ever we need. Which is the best way to go here?