Recommissioning nephew's ST162 that was mine before. Can't source a standard rear silencer, eBay part (new) turned into bad quality (scratched, pitted, dings, bogged job). Anyone knows where to source or get custom built to OEM style? Need original motorised Antenna (86300-20291) Window Master Switch (84820-20190); shares with late 80's early 90's Supra Thanks!