I did the Swag tailgate conversion and have mixed thoughts on it. I have always ran with my spare in the tub of the JK since it can get hung up when on an incline/decline where I go. The kit took about 4 hours to install, but the tailgate doesn't line up perfectly on the passenger side. I have a few more ideas on how to adjust it, but I have not found the time yet.
I will say this, the customer service is top notch. I had several questions prior and after buying and they did a remarkable job in answering them. The products are very well made at an affordable price. Instructions were pretty clear, but could use a few more details, IMO.
Overall I am glad I did it, as the tailgate makes a great workspace on the trail and with the top down, you can haul longer than normal items with the tailgate down.