GTX, saw a pair of original 340 duster tips on e-bay the other day. They looked used, but good. The seller wanted 75 bucks buy it now, but I just looked & they are gone. Only thing I can find is the re-pro tips & they run around $125-$130 bucks a set. Plus an extra $60 bucks for the hangers. Out of your price range I would imagine. Your local muffler shop might have a nice set of tips tho...
E-bay tips. $129.95
http://cgi.ebay.com/ebaymotors/1968...019QQitemZ290172624870QQrdZ1QQsspagenameZWD1V