This stretch kit is a complete solution to increasing the carrying capacity of your vehicle. These kits provide all the necessary hardware to stretch a standard model cart to carry up to six passengers. How do you get to six passengers? You will need the stretch kit plus the addition of a rear flip seat. This rear flip seat does not come with the stretch kit. This stretch kit does not require welding, rather this is a bolt-on kit with harness. This kit includes additional front seat frame. To be clear, this kit does not come with seat cushions, extended canopy top, or the rear flip seat discussed above. Please note, extra metal brackets, wedges, may be required to secure the fit. Even though welding is not required, it is required that the frame be cut. With all this, we recommend a professional installation. This item is not returnable.