There is '73 TX500 being parted here locally. It has a very nice gas tank. Is there any chance I could get it to fit my project RD350? 
			
			
			
				tunnel too narrow to fit over frame rails if I remember correctly 
			
			
			
				The fork lowers and front hub are desirable for a dual disc front end.  If you are so inclined
			
			
			
				I figured it was a long shot, but just in case..............
Thanks for the info.
			
			
			
				If you're still curious about dimensions this TX500 tank has been listed for a while and shows some approx measurements. 
https://inlandempire.craigslist.org/mpo/d/indio-1974-yamaha-tx500-gas-tank-xlnt/7852104647.html