I have a '94 RC "short bed" Pickup and I need a camper shell. I found this one on craigslist, but the dimensions are not PERECT. How much off is too much? My bed dimensions are 76 1/4 x 60 and this shell is 76 x 62.

http://modesto.craigslist.org/pts/4758519091.html

 

The canopy that you are looking at on Craigslist would hangover by about an inch on each side. If you need one right away, I would ask the seller if you could test fit it on your truck before buying the canopy. Personally, I would keep looking for one that fits your truck better, but finding a decent one might take a while to find. I spent a year looking for a better canopy for my truck and I finally found one a couple of weeks ago.