KENDELL - I think Brian Miller's puller site even mentions the problems with stacks & straight pipes on Kohler's. My little straight pipe on the 72 is ALL under the hood and only 22 inches from the face of the exh. port to the end of the pipe and I have a support bracket on the end that bolts to the starter/generator bracket. I have TOO much time & $$$$$$ in that little K321 to have it "fall apart"!
Back years ago when the 70 was new I had about every variation of striaght pipe on that little K161, everything from a 4 ft tall pipe with a rain cap that was annoying as all heck, to a pair of chrome VW Beetle resonator pipes in welded up elec. conduit for "Twin Stacks". TALL pipes just don't work for Me and ALL my trees, even short pipes would be a problem. I do like My side exit exhaust though, even at idle I can blow stuff off the workbench in the shop from five feet away!