1979 Ski-Doo Supplementary Shop Manual, Page 56Get this manual
SECTION 04 SUB-SECTION 02 (ENGINES)
354, 454 ENGINE TYPES
ENGINE SUPPORT AND MUFFLER
Blizzard 7500 PlusSuper Sonic
12345678Carriage bolt Flat washer Cup washer Threaded spacer bushing Vibration absorber Engine support Nut Distance sleeve Washer Lockwasher Nut Gasket Exhaust socket or manifold Lockwasher Allen bolt Tuned pipe (P T0side) Tuned pipe (magneto side) Spring Rubber shear mount Washer Nut