Here are the New PEP ARC adjustable Piggyback shocks. They use an all new body with a true piggyback setup which will allow for better oil transfers and cooling. The body of the shock is coated with a teflan coating and as you can see from the picture they are still using there quad rate setup with ZPS (zero pre load)
These shocks will retail around $2000 depending on whether you opt for the Titanium springs or the standard steel setup.