I’ve looked through the manual and finding conflicting info. I’ve put a rubber seal around end of jet pump like my 98 GTX, but it won’t allow the pump to fit into the pump shoe.  So the manual shows putting a layer of “Great Stuff” to make a seal?    One pic shows a neoprene gasket but I don’t find one to fit a 155 mm pump.  It also shows using special washers for the 98 and 97.5 pumps on the gsx.  Goes between the pump and pump shoe.  Any help is appreciated.
				
			 
	


 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		