Yeah, like when I went and looked at it I measured the wheelbase, distance from the front of the box, to the first bolt, first to second bolt, and second bolt to end of bed, and then I measured the frame width. So when I get a chance to go over to the shop I'll measure up what my '78 is, the gas tank door is in the right spot, like it all should work, if the measurements are the same. It was just getting dark when I was looking at it, I recall it had a "Trailer Special" badge on the tailgate, I just did a bit of research here and I believe, all regular cab long boxes should be the same wheelbase unless they are a SCS or CS and have the Spare tire or is it a toolbox, compartment. I appreciate you going to look for a grille for me!

Thanks,
Negrey