Interesting, I just bought a SRT-6 and I am doing service on it now and the first thing was the catch can from Rob. It came with the car and was fairly easy to install. I will be installing one on my 5.0 F-150 also thats been in my garage forever. It cant hurt. I just sold a turbo mazda and its a DI motor and they have to clean the deposits on the valves from time to time to keep from throwing codes and running poorly. I will follow this closely. Not sure you can get to our valves as easy as the Mazda 2.3 DI motor due to the "HuFFer" sitting in the valley.