can anyone please tell me where i can find a 72-74 Plymouth barracuda upper grill

Best bet is probably Year One. Last time I needed one I was able to order through my dealer parts department but that was 1985. Website doesn't show one but you could call them at 800-932-7663. There's another outfit in Louisiana showing 72-74 grilles in their ad. Classic Automotive Reproductions, http://www.performancemotorsportsnews.com/index.php?vendorID=526. Hope this helps.

If you're not there already, there's a bunch of good people at http://www.cuda-challenger.com/cc/index.php. Very helpful spot as well.

Keep lookin it will take a while , I spent ten years locating a '74 new yorker grill after I hit a deer . Had to buy the whole car ,400.00 for the grille PBN