Well, to date I have had no heat problems. Things do not really get that hot. I have cruised on the freeway for 2 hours at 80 mph already with no problems. I run all accessories in the stock locations. I do not run the A/C pump because I do not have the A/C on the car functional yet. But it will fit too.
All that is done to my motor that HAS to be done for big boost and massive power is:
-Forged pistons
-Billet rods
-Stainless valves
-Good valvesprings
-Head studs
-Main studs
-MLS head gaskets
-A1000 fuel pump and regulator
-Get the motor tuned by a pro, or learn yourself. I tuned my entire setup to well over 800 rwhp on 93 octane myself. So it not impossible, just do it carefully.
That is it. Do that and you can have a 1000 hp engine.