good or bad and what the rpm range whos the company that uses them??
you can also use the Trick Flow. Take a look at the site and it is a "R" style. I've heard pretty much good stuff about them though, I have not had experience with them myself. I do plan to use it in the near future. Also another ones are here...BBK ....but I have not heard anything too good of them yet. So this is definitely no experience with them myself here. I'm sure there are others who have experience with them as I've mentioned above. The Reichert is also good. But like he says, good for boosted applications. Dunno if you're on that route or not. Hope this helps.