Finished up the seat backs and assembled them with the wire pins for the hinges and then safety wired. Ready to install. Got back to the roll bar which is a lot of work but it's straight forward and nothing new. Match drilling and countersinking and then lots of univeral head rivets and flush riverts and CS pull rivets and std head pull rivets. Once it's all riveted together it gets attached to the brackets and match drilled for final assembly. I am going to paint the roll bar and brace parts before they get installed. I think that I am going to paint them to match the outside color scheme and I don't even have that pant yet so these partrs will wait now to be finished.