Maier apparently have new tooling for G-H model side plates, I am told they will be rather expensive but much, much better than previous items, Last pair of NOS G/H side plates I sold (Yellow)were to Scott Wilson for $750, Last set I purchased (White) were US$750 from Leif Sundrin.
J onwards fronts and rear guards are available at Yamaha which fit fine look correct even though they may be slightly modified from originals, there is absolutely no use getting anal over parts for bikes you are going to ride as you can take a mega dollar NOS part and make it worth shit in an instant.