I stripped all the paint down to bare metal, roof, dash, doors, floor etc. Used PPG epoxy primer, then shot catalyzed paint on everything. Masked off firewall pad, front glass was out, so shooting dash was easy. Used a $70 HVLP gun, followed all the instructions and got a decent job.I figured I am going to spend a lot of time in that cab so I took the time to do it 1 time and boy am I glad.As far as the amount of work just painting inside the cab? I would guess about 40 hours.I've seen rattle can jobs but if you take your time, buy good quality materials, there's no comparison.