Yes, that is the same adapter. They used to sell them on eBay, but I cant seem to find them at the moment.
That being said, the Dakota Digital SGI-5 is only a little more, but is infinitely adjustable to allow for any tire size that you want.
Really.... Well that's a game changer. I guess I'll order that one instead. One of the biggest deturents in me buying new wheels is the speedo correction I'd need for 18s. Awesome!
1992 Honda Accord EX - <'93 JDM Prelude Si F22B DOHC>
2003 Subaru Legacy LSE (Silver Stone Metallic)
2005 Subaru Outback XT Limited