I am on the final parts of the build up of my 57 3100 step.I have pics in general truck talk under my cab is back from paint shop,lots of replies and comments which keep me going.I have got loads of info trawling through all the different threads.Stovebolt is really great thanks.Anyhow here is my query,I have reused the original windshield and the rear window but the door glass and vent windows and frames are really beat up and not usable.The window regulators are ok.When I price up the parts it really starts to stack up.I have seen one piece window kits at under $400.00 ,has anyone used these and what do you think?Thanks in advance Mark.