Wanting to upgrade throttle body, any suggestions? +I have some other questions here

I have a Saleen Supercharger on a 2000 Mustang GT. I want to upgrade to the biggest throttle body possible? Are their any suggestions from those who have done the same? What are some recommendations?

Other mods completed at this point are:

3:73 gears
BBK Caster/Camber Plates
Short Throw Shifter
Straight Exhaust (Cochise County, AZ there is no emissions here, no converters necessary)

Also I was having problems with the intercooler running 200+. Inspection into the problem revealed that my wires were crimped up and the fans stopped working. Now I am runnning about 130 and at times after a hard run it will get to 150. Any suggestions on the max temp I would want the intercooler to be running at?

Finally I had recently busted a rocker arm. I had the necessary surgery done. Can I expect it to be a weak link now? Or should the replacement make it like new and I should be having no worries?

Thanks,

noahzarc1