Steve,
not my date, check the link below to the 73 Paramount catalog. And I've seen them with my own eyes. I also know that the archives are full of posts about bike boom bikes with all kinds parts that were not speced in the catalog. I think we both could be accurate here. In any case a GP4 did not come on the Paramount, we agree on that.
http://www.geocities.com/
Jonathan Greene
who has 14 Paramounts in Sunny Oviedo FL,
and one mixte on ebay