I just bought a beat up 2000 Trail Boss 325. The bleeder screws were broken off when I got it. I bought a replacement caliper online. Should I try to replace the whole caliper, or just the bleeder screws? Anything to be careful of if/when I disconnect the brake lines?

 

if the new one is in better shape replace the whole thing. make sure to use penetrating spray on the fittings to help remove them so you don't brake them off as well.