i'm surprised the bed liner turned out so well . in the floor step in parts i have these chevy rubber things . i wanted to put some kind of rubber stuff in the front area but this looks good. i think you should double check all those windows and roof vents for leaks before you put on side panels. i would like to say i have a 78 and parts car 79. but my favorite was my 74 sports van. it was a 1/2 ton with big windows all the way around and round headlights and was a little longer .