2005 Ski-Doo Racing Handbook, Page 406Get this manual
SECTION 092005 800 MOD ENGINE KIT
Tune Pipe Support
Make new hole of 516 inin the support hullInsert the fastener of the tune pipe in that 516 inholeMake an other hole of 316 inthe support of the hull and install new pop rivet to hold the fasternerTune Pipe Fastener Installation Update tune pipe fastener installationUse the black pop rivet 316 inx 690 inScrew M6 16 (PN 210 261 680) use existing hole Make hole 1364