I got into the trend at the time to do the ZE intake swap. I put the KL31/KLZE straight neck on back in 2005 without port matching. Car runs fine with it I just haven't noticed any difference in performance. I like the look of the ZE intake so I am still using it as of now. I painted it with black engine spray paint. If I had the time I would have polished it instead of painting it. Thinking about swapping it over to the KLG4 for a new Nitrous Oxid setup in the future.Â