the first immediate thing you will notice is a smoother idle, and also a smoother engagement as you spool up. I was extremely impressed with the engagement at first, then I started flying the absolute crap out of it, and I cant seem to make it slip at all, period, none.....(not that I had a problem with the original one, bc I didn't, but this one is beefy!)
its great. IMO the liners are easier to install also. I have to look back at my notes, I think the gap is a tiny bit bigger due to the larger clutch. maybe 15 thou. total gap. what I am getting at is I did not have to break in the new liner, it idled perfectly without any areas needing to be sanded down or the head held and broken in. very nice.