We use 2.5" King Coil Overs with Remote Reservoirs for our DMAX Straight Axle Swaps.
We worked with King and and came up with a our special tuning to create what we think is the best ride quality on a Duramax after a straight axle swap.
Each of the shocks come with a 90 degree fitting for the remote reservoir so it can easily be mounted up and out of the way. The shocks have slide over rubber bumps and 1.5" wide mounting service.
Our 8" Travel Kings are Single rate, with 18" x 400lb spring rates.
Our 10" Travel Kings are Dual Rate Coil Springs: 6" x 500 lb and 16" x 400 lb.
These are sold as a pair.