Quigley has announced a 3 inch lift kit for its Chevrolet and GM 4x4 conversions. The conversion fits 2010 and later models with gas or diesel v8 engines. The kit is a $2350 option on the Quigley conversion. The Quigley conversion for new GM vans includes a two speed transfer case, and retains the factory independent front suspension
http://www.quigley4x4.com/Products/NewProducts/LiftedIndependentFrontSuspensionLIFS.aspx
http://www.quigley4x4.com/Products/NewProducts/LiftedIndependentFrontSuspensionLIFS.aspx