I had the Borg metal stems installed on mine. The first firm I tried (a wholesaler) was not sure what the "bend angle" should be for my wheels (Alcoa) and they suggested I call the retailer in the link below. I did that and they knew exactly what I needed ..... including the rubber stabilizers. I paid Les Schwab about $65 to install the hardware. As you probably know, the inside dual cannot be spin balanced with the super long stem installed.....beads can be used but I used "Centramatics" instead. Many say the duals don't even need to be balanced so YMMV.
I love being able to check the pressure, add air or install my TPMS sensors without even getting down on one knee. Well worth the $ IMHO.
You might want to give these folks a call. They will know what you need.
https://www.shinyrv.comBest .......... and be safe.
Ed Sievers, Denver, CO
07 WGO Outlook 31-C; '16 Kia Soul with 6spd DIY Tranny
"Be the person you needed when you were younger"