I know this is probably a rudimentary question but to my understanding the s4 and s5 bumpers mount the same way it is just the side moldings that are different in size is that correct?

 

turn signal lights are also different, Both the lens and the bulb housing that bolts too the bumper.

 

would it still be plug n play or would the harness be different? reason why I ask is it seems harder to find a lip for the s4 front bumper, and my bumper is pretty screwed up from the previous owner, so I wanted to either a get an S5 bumper and get a lip or b I would have to go with like shine auto or something

 

personally I think if not changing all the moldings stick with the s4 bumper

an s5 lip fits an s4 bumper, it doesnt jump right on the car from your hands but it fits. I made a lip that fit both bumpers no issue at all im sure if the lip I had fits any s5 lip would fit as well- as long as you actually put effort into it

 

yeah rob you do make a very valid point