If your truck has a fixed hinge point on the right side of the truck it will not have the proper hinges. The Elongator Tailgate will only fit on the hinges that come with a rotating hinge point on the right side. If your GMC/Chevy truck has the "lift assist" kit you should already have a rotating hinge point. Ford trucks may have a rotating point but may not have an assist. The rotating pin is the important part.
IF you have a fixed hinge point on the right side, you will need to purchase a HINGE ADAPTOR package specific to your manufacturer. Once you install these adaptors on your truck the Elongator Tailgate will fit properly.
To determine which type of hinge you have:
1) Open your tailgate and lower it about 1/3 of the way.
2) Pull out on the right side of the tailgate. The gate will slide up and off the hinge point.
3) Look at the hinge and compare it to the pictures below to determine if you need the HINGE ADAPTOR kit.