It just recently came out, they are made specifically to vertically mount on places such as a BMW grill. Here is direct link to Cliff's site, if you scroll down you'll read the new BMW edition as they call it.
BMW EDITION DUAL SHIPS TODAY!
Vertically mounted diode for BMW kidney grill installations
2 Sensors New Ver. 8.9
Ver. 8.07 CPU NOW with FREE User Downloadable Firmware Updates
Main Power Switch w/LED
Complete Installation Kit
Originally Posted by ZTZ1010
Dude, I'm not sure where you're getting your info but there are no specific versions. I'm in touch with Cliff (The US Retailer) on a regular basis, as I've been with LI since their initial US release. There are no "BMW Edition" or alternate versions. They are not supposed to be mounted vertically for optimal performance.