I have a 99 summitX i just built the engine to a 740 and swaped the tunnal for an 01 summit 151" with new hood and belly (my old rails are 151 and i dropped and rolled my change case) Now what i want to know is how big of a lug can you fit under a stock 01 summit and how much if you drop and roll the chain case? Also is it best to use my skid off my 99 witch is already a 151 or put a skid off a newer sled under it and will a rev skid work? And I would like to raise my back end to get some extra room of the ground is there a drop bracket or kit? Just messing around so any hints or tips let me know thanks!