I have a Stihl 024 with a 16 inch bar. They haven't made that saw in several years, but it's still pulling a lot of wood out of those logs! I had to get a different bar to run my rip chains because of something to do with the sprocket. also, I couldn't get it through my regular saw dealer. They helped me find the right fellow, though. He had to be specially certified by Stihl and the folks who made the bar in order for him to be able to order it. The difference in how that setup rips a log over the crosscut chain is worth every cent and all the effort, though!
Good luck!