I think the closest thing to a SS would be the 6.2 403 HP MAX TRAILERING Package,this would give you 3.73 gears G80.You can get it in Ext.Cab and 4WD, not AWD!! It should run 14's and be a heck of a four wheel drive truck! When you order the MT you also get the 9.5 rear and disc's out back.When you throw in the 6 speed Auto it just might be the best SS truck Chevy has ever made!