Just did it. They are nice calipers. You can also buy 2, and use a tap and die to change one into a rear caliper. The front and rear calipers are exactly the same, but with different length bolts. Just cut one of the bolts and add some threads. The recessed hex nut is long so reuse the old one for the rear.

Being that it is an 80’s bike you will have to worry about Caliper reach. Can you get away with short reach calipers something like 47mm compared to long 57m (think that’s correct)?

You can file a little of the caliper away to make things fit assuming there is enough metal (in this case a couple of mm). This will be especially true if you have already converted from a 27 inch wheel to a 700c.

Harris cyclery is out of drop bolts, and they look like they cost somewhere around $40 for a set. Blows the savings so you might just as well have bought long reach.

Also make sure you have a recessed hex nut securing the calipers. Imhousing had an external nut that required him expand the rear hole to allow for the recessed nut.

Considering the price this is hard deal to pass up, but it looks like aero levers will be more bang for the buck. Also look at it this way you will get a spare set of those oh so loved shimano brake pads.