Hi Y'all, I have an '81 K5 with severe cab rot where a sunroof has been fitted.I would like to cut off the roof completely so that I can fit the earlier style full length hardtop and use the vehicle open top for the summer. I would however like to cut it to the correct dimensions so that when summer is over the full length hardtop will bolt straight up. I cant just measure the full length hardtop as I dont have one! (yet). Has anyone done this conversion? Or can anyone suggest where I might find accurate dimensions? Thanks.