I need to replace the hinge pins in my 45 GMC 1/2 ton. While doing so, i would like to replace them with a kit that uses bushings. also, I need to install the mirror bracket into the assembly. If I install everything now, will there be enough room to paint it properly? If I paint first then assembly, I am concerned that I will damage the paint during the installation. Any suggestions where to buy the longer style pins, and bushing kit?

Installation suggestions appreciated as well.