I did the 2" kit, it actually raises it 1.75". I picked this size based on pics I had seen, any higher and I would see the wiring harness/track which is something I did not want to see. I did not have any clearance issues and the option to move tank rearward is not available due to the mounting location of rear tank bolt. I added the 1/2" to the rear to balance of the look slightly and to help keep my fuel gauge somewhat accurate.
Since the temps here in Texas have not been above 70 since I added this I can not comment on the effect this will have on engine temps. But I will say it has made a huge impact on the buffering that I would feel.
These are pics are of the front pieces. The rear piece is basically a longer bolt and a 1/2" thick washer. Makes getting the seat on a little more difficult.
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