I have an aluminum RT-One bolt-on on my 954 , no need for a PCIII. I bought this as a replacement for the damaged stock can on my 929 project but decided to use it on the 954 until I purchase a full system.
Starcycle had them on closeout so the price was right. The bike
may have gained a couple of ponies but for the most part I would say looks and sound were all that were gained by this mod. I do have one complaint... the decal on the Jardine badge came off when I was washing the bike one day. I'm sure that I can procure a replacement but have not yet tried.