Tire hitting fender

I dont think you can get a half inch with caster do you?
It depends on where it's set at. Factory spec is a little negative. Most people run as much positive as the control arms will allow. You need to start somewhere. A good alignment shop might be the best place. They might get it on the rack and look it over and decide it needs to go to the body shop for some frame machine time. You may not get charged much for an initial check.