Shelby Wide Body Kit in Shelby GT, GT-H Modifications and Tech. Posted October 11, 2013 · Report reply Thanks for the info. I built my shop from the ground up in 1972 and have been doing repairs, customizing and restorations ever since. We complete about a body kit installation a week, in addition to our other work. As I am probably sure that you know that some kits are better than others. I have returned many kits that are so poorly manufactured that they were not worth the box that they were packaged in. That is the reason for my concern, not the installation. Thanks again!