Diy tired of waiting on fx usa so I ordered a power plenum kit from Kral along with an enhanced transfer port and installed it myself ordered from Kral in late April and got it early June still haven't heard from fx usa also found an oring kit for yhe impact on Amazon.com glad I bought it came in handy for my reg and an oring I nicked on the vlv rod during the install.
https://youtu.be/mlVc5phOHU8
https://youtu.be/PDAb7Jo0Udo
https://youtu.be/mlVc5phOHU8
https://youtu.be/PDAb7Jo0Udo