I'm all for supporting these guys, there would be alot of trial and error without them, and it's nice to deal with people who go out of there way to get you going. I just put Rocz yamaheaters on last week and wow those are great, I will be getting his HIDs setup. I picked this Nytro up last summer, skid rails and drivers were trashed, I put this 13 AC float skid under it and really like how it works, never rode the nytro with the stock stuff so nothing to compare it to. My first Yamaha and 4 stroke, wish I would have went this way when I was younger, got a 2 page list of things I want to do so this one will be with me awhile. Thanks for the info Hooray, I will be getting the 14.7's from SB and if this YPY spring doesn't get me numbers like yours I'll get there's.