Well a week or two ago, I contacted Jay (j-dawg) about a custom sticker. I got it in the mail yesterday, and stuck it on the windshield.
Jay was promp to email me back with answers to my questions...and he emailed me a .pdf of sample stickers. Great guy!
One thing that I liked was the little plastic paddle that was in the package...for smoothing out the sticker and taking the air bubbles out from under the letters.
http://wickedsticky.com/Here is the sticker.
