JBart,
the 653 looks just like the 656's, the differences are:
-The print on the lense is slightly different (you would not be able to tell unless you got within 3 inches of the lenses),
-There is 653 stamped on the top of the chrome housing (again you can hardly see this unless you get within 6 inches),
-The last thing is the type of bulb it uses and the wiring (both internal and unable to see). The two lights from about 2 feet away when on your car would be impossible to tell the difference. I know this because I have a set of both lights. So if it is a good price for the 653's I would go for it because only the expert would know and of course you. ;D
Doug