I like the color scheme on the bike! And no, the stock doodlebug clutch cover won't work on the gc160. It's pretty easy to fab up your own, or buy one. Awhile back I used a PMR cover on a gc160 and it bolted up great. Good luck!
Edit: didn't see huffy hustler's post, just to piggyback, if you can fab up a bracket you can find a way to use the stock doodlebug cover. Should only take a couple pieces of bent metal and a couple bolts.