When i run my AC, be it on the highway or stopped, my car starts to run hot. I've been through so far two radiators, both developed a crack at the top.

I'm close to 100k mi on the car itself so i'm thinking its time to do a water pump and thermostat.

Any ideas or suggestions?

Car: 2002 WRX
MI: 94k
Mods: uppie, downpipe catted, cat back, intake