A few weeks ago Cloninger Ford in Hickory, NC had quite a few. I wouldn't pay $38 for them and saved a few bucks at LMR.com. But sadly LMR is out of stock.
I have LMR SVE R350 wheels and the Reverse Logic extenders do not work with them. They did with the stock wheels. Will be curious to see what the OD of the Caliperfexion product is. I checked their site and they don't have them listed that I could see.