Mabuhay!
Rear... meaning passenger footpegs?
The right-side is also bracket for muffler as well. What's holding your muffler on currently?
Tricky part with these is mounting area is onto frame's round tube. Bracket has matching round section that mates up to frame tube. Not likely to find anything from another model that fits. Best bet is used OEM items on fleabay.
https://www.ebay.com/itm/253242344444