There use to be a pocketbikeparts.com.au before, Yong, a member here had some Lucky7 frame side covers, but he is in the USA.
Get a small strip of 1mm thick alum sheet, or polished SS, and make your own side pieces. You can polish the alum too, bend and drill mounting holes, and you could put more holes for looks or to lighten it and give it that racing look,lol. Here in California I paid $38 for two pieces of 1/4" thick 6061 T6 aircraft alum 7" x 9", going to make 4" extension for the rear arm to make it 4" longer and 2" higher.