I used a Brock's drag racing essentials kit on my 2008. That kit uses a strap to lower the front and extended links to lower the rear. I am lowered about 2". I had Spencer Cycle (who are great folks to work with in North Carolina) rework my stock rear swingarm to have an adjustable 0-6" stretch. I set my stretch at 4.5 inches. I have not changed my plastics underpan to a Tiger Tail. I used a Competition Werkes license plate kit that removes the stock rear fender extension. Please note that when you stretch, you will need a new chain, and an adjustable kickstand. Also note, stretching the length and lowering the bike makes the rear spring rate higher (the bike is stiffer in the back). You can change the spring to soften the ride (I have not done mine). I can run out of clearance in the front on very sharp bumps, but I do not on the back.
Let's see if I can post a couple pics...
Here is a picture of a Brock's upper clamp that allows the fork tubes to be moved up:
Here is pic of the truck, where I keep the water tank and pump for the water fogger, the valve for the boost controller, and PCIII; thus, I could not change out the inner plastic fender:
Now here's the part that makes this bike fun:
Good luck with your project!
Steve