I'm not sure how I missed your message. Guess I didn't check. lol So far as I know the lifts have been home made. I suspect eventually we will see a commercial version. Love my radio....
Southeast Texas - Beaumont area - bout 30 miles north
I got mine from amazon.com a lot cheaper than other sites. The throttle response seems better. I wouldn't expect to much from a filter. It does flow a lot better than stock but I like that I can clean and reuse it too.