Need help with my 72 stepside gmc truck

[shagyteacher]

Hi all,

I have a 72 stepside gmc truck ( longhorn ) and i want to make it longbed . What i mean is that there are 3 sizes of that model:
( shortbed- longbed- longhorn).

The rear fender for all model are the same size and the different is the bed panel. See picture # 1,2 and 3

Picture # 1 is the sortbed



Picture # 2 is the longbed



Picture # 3 is the longhorn



My truck is same length as picture # 3 and i want to make it little short same as picture # 2. The rear fender are the same as for all size but the different is the (bed panel and step plate) . I dont know what is the length of the bed panel for the second picture or can someone give the website where i can buy bed panel same as picture # 2.

I have the chassis for the second picture but i couldn't find the bed panel

Thank you.