QUOTE (Buck Billy @ May 10 2008, 08:50 AM)
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According to FMF the Ozark and Z250 have different bolt pattern for the exshaust.[/b]
I checked that out today. Here's what I found: Different (larger) heatshield on the headpipe for the Ozark, but they have the same headpipe under that heatshield. The cans are different - big, heavy can on the Ozark (quieter, stock) than on the Z-250. Both cans have the same (locational) mounting point on the top of the can; bolts through to the subframe. The mounting point on the subframe is in identical locations (it's the same frame/subframe). However, on the Ozark, there's one additional mounting point before the can, and it mounts to the mid-pipe. The Ozark subframe has a tab welded on it that sticks out over the mid-pipe, and the stock mid-pipe has a threaded bung (for lack of a better word) welded onto it. The mounting bolt goes through the tab, and threads into that bung. Obviously, that's there on the Ozark to support the extra weight of the larger, heavier can.
Will a Z-250 exhaust mount to the Ozark - yep. Do you need that extra mounting point, where you won't be able to bolt it into a Z-250 pipe? Nope, the Z-250 doesn't need it. The aftermarket exhaust weighs the same, no matter which machine it's bolted to. If the Z-250 doesn't need it, you won't need it on the Ozark. If you're going to keep the Ozark, you could even cut that tab right off the subframe and paint over it - just act like it wasn't there anyway.
Another difference in the frames - the Ozark has big floorboards, and they mount into the bottom frame rail at the front; bolt goes through the forward bracket on the floorboard, and bolts into another threaded bung welded to the frame. The Z-250 doesn't have that threaded bung welded onto it's frame.
Working on spec sheets now - they're twins, as far as specs go.