West side has many variations and mods. You dont need bands and chains to do a west side program.
i work a simple west side - dynamic bench, dymanic squat, max effort bench, dynamic or speed deads.
i have also seen west side programs with olympic lifts in and the max press days being oh presses.
west side is about getting mo stronger but with lifting heavy ass weight and getting strong muscle comes with it.
i have gained more mass and muscle on west side then anything else.