I have got the rear leaf spring mount have not replaced yet it looks good and strong
I bought a used 2016 Electra Glide Ultra Classic that was completely stock. It had a terrible flat spot and even backfired when ridden at 2000 rpm or below and also in the middle of its rpm range. After installing the Fuelpak x, without any other mods it now runs smoothly throughout the rpms and the throttle response is excellent.