Yes, you CAN use one of those cranksets, if you can find one. Ebay will probably be your best bet. However I agree with the others, that crankset and a matching cottered bottom bracket will be very heavy and look very out of place on an 80's bike. The same for that steel stem--and you might not be able to use that--maybe you could shim it. If you really like that style, maybe you should look for a bike from the 50's or so?