Formula Car Wheel Suppliers

I am looking to purchase another set of wheels for my Piper F1000 and was wondering if the forum members could point me to suppliers that they have had good luck with. Looks like there are not a lot of wheel manufactures interested in supplying custom 13 inch wheels these days. I have been working with Ryan Dettling at Jongbloed but he may not be able to supply what I need in the time frame required.

Any help would be appreciated.