I have noticed that the body lines are a little off on my truck and looked to find the cab mounts are shot. How much do these run and how hard are they to put in?

Shouldn't cost that much (less than $100.00) and you have the option of doing a body lift as well if you want at the same time.
A couple of hours, with a floor jack and a few wrenches (air tools recomended) and your done. I recomend getting some new bolts as well, some of yours might be rusted pretty bad.

i dont want to start another thread so i have a brake question. I have manual brakes and under moderate pressure the rear passenger tire locks up. I am not experienced with drum brakes so how do i go about adjusting this?

also how hard would it be to get power brakes?