Just curious why so set on the ProCal? I remember I bought a ProCal when I got my 2012 JK. I lifted the Jeep a couple weeks after I got it in Sept. of 2011. I ordered a ProCal to adjust the tire size. The one they sent me didn't work with the 3.6 so I had to send it back and wait a month til the new version came out. I got it and used it to adjust the tires. A few years later, I had my gears done and when I tried to use the ProCal to change the gear ratio in the computer, it wouldnt work. I contacted AEV and they told me "sorry, you need the updated version to work with the 5 speed auto. For $100, we'll let you trade yours in for the updated version. I decided instead to just get the TrailDash 2. When the traildash came in, I unmarried the Procal from my JK and installed the ProCal. I was going to sell the ProCal and listed it. A week later I had a buyer for it. He went to test it and it refused to work. We called AEV and they told us it was because it was still married to my Jeep. We tried to unmarry it again, It honked just like it was successful, but nope, it still thought it was married to his Jeep. AEV said, oh yeah that happens sometimes. For $100 we'll trade it for a new one. Since I was selling it for $100 I told them no thanks. I had a similar customer service issue on my overpriced AEV bumper too, but it's waaay too long a story. They make some cool products but just horrible service IMO.