Is your truck a short or longbed ??? If its a shortbed(114" wheelbase) it prolly was a flareside box and the aforementioned 57-66 wrong style bed wasnt offered on the trucks set up for the 6 1/2 foot beds...those were either flareside or unibody/integral cab trucks...how about integers for a nickname for them 61-3 1 piece wonders ??? LOL


- cs65