I got a fitted cover for my 64 ( $189.00) from LMC, and it went on pretty nicely. Be careful though, as they do rip at the seams if you pull too hard on them.......luckily, I was able to "hide" my little rip. The rest went smoothly, and it looks real nice. It seems to be of pretty good quality, and is quite comfortable as well.

1964 C-30 http://s1179.photobucket.com/albums/x383/autoart3/64%20one%20ton%20dually%20flatbed/