The Club Car DS Blue-Dot 80 Inch White Hard Top works only on carts with an OEM or factory rear seat kit. The included frame gives the top added strength and rigidity to prevent warpage. This is very common in areas like Florida with hot temperatures followed by rain, or regions like southern California where it's 110 in the day and 50 degrees at night. We are sure it's like this everywhere, especially in areas where it snows.You are also going to get the supports and hardware needed to get everything mounted. These golf cart hardtops are much longer than the factory at a whopping 80-inches. This one is white, but we have them in a few other shades. Just give us a call here at Buggies Unlimited, and a sales rep can go over all the options. You will be on the phone about the light truck freight shipping anyway, so you might as well get the color you want.