I like the '57, same year as me. Keep in mind a short bed is more popular and worth more than a long. Honestly 55's & 57's are pretty close in popularity. Go look at condition of some on Ebay, rust buckets are 1K

Eric
http://s1199.photobucket.com/user/sparky234/library/My%2057%20Chevy%20Stepside?sort=3&page=1
'57 Chevy 3100 (Little Red)
'81 RD350 LC - Fun, Fun, Fun
'83 GS1100E - Pocket Rocket