I looked at both frames next to each other this AM, as they happened to be sitting in the same spot. The resemblance to my 74 Paramount is uncanny, other than the Paramount's head tube has a bit more flare The brakes that came installed on this were short reach Campagnolo. With it being purchased by the previous owner in Chicago, a modification at the places you mention would make sense. The serial number still has me a wondering if it was a Paramount I can't see any indication of a leading letter.