Msibig

Hey folks, i have recently bought a 1 owner mach 1. It has 18k miles. Built cobra block, forged pistons, springs, valves, 60lb injectors, booster pump, exhaust, p1sc procharger, steeda suspension, steeda short throw transmission. The car is running 8lbs of boost and is awesome. But, i have been having a overheating issue. The dealership sent it to Fast lane in nc after putting a new fan on it, and they couldn't find anything wrong with the car. But as soon as i brought it back home it started getting warm again. It does run ac, which I haven't ran since the trip home, and i think it has a stock radiator and fan. People around here think I need to get a better radiator and fan combo. What do yall think? Any knowledge or tips on this would be awesome, since this is my first high performance car I'm nervous and anxious for some answers. Thanks