Is the main portion of the plastic bumper not the same for all models? It looks like it's just the side end caps that differ. In which case you should just be able to order the matching set for whatever fender flares you have.Typo, meant one for each trim level.
front and rear fender flares on sport/sahara/rubicon are all different, after closely looking at photos of each. Whereas I thought the Sahara and Rubicon share the same rear fenders. Apparently not the case, rear fenders are also higher clearance vs Sahara.
Sahara vs Rubicon