hello jeff,if you have complete kits that you don't want to open.you don't have to rob peter to give to paul.for the wind shield as sean said clear acetate works fine,sometimes looks better then the kit glass.or you could go to any arts and craft store and buy a sheet of clear plastic they use for dollhouse windows.and if you want to replace the front axle for that international kit.sourkrauts truck models sells replacement front steering axles for 1/25 scale models,and their made out of metal.just in case you want to build that IH.your doing a real nice job on that mack! I wouldn't hide that on the top shelf like you said.i'd put that right where everyone could see it.