Foreigner
Senior Retro Guru
Have a 175mm single speed 48t if wanted to swap too.  Also have a 170mm double too, and could potentially swap the rings, but they are notoriously difficult to take off, thanks to their rather soft bolts.  
Unless someone gives me a tip how to remove chainrings from cranks
				
			Unless someone gives me a tip how to remove chainrings from cranks