the piece that is welded to the silencer where the sparky mounts looks like it was weld at a different point in the pipes life. $100 is a low price too! just bc its home made doesnt mean it wont work. try it and find out for yourself how it works. 
pics of mounts. make your set up has some sort of rubber mount to control the vibrations. 
http://www.yfzcentral.com/forum/86-y...ag-pipe-2.html
				
			 
			
		 
			
				
			
				
			
			
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