The spacers are well made and sturdy but I had to alter them for my 2021 Ram 1500 Crew cab. My back seat holes and the peg didn't line up but it was an easy fix. Also had to run to home depot to grab the front seat bolts (M10-1.50 65mm) since they are different than the back bolts. A little adjustments and one trip to the store and my seat is lifted, secure and working great.