..I got the harness from sfxaudio.com but don't think it's the right one, trying to return it, it's the Scosche TA02B wire harness, says 87-up Toyota on the package, but the website advertised it for '93-'97 lexus Gs300.
.. I had a shop install the after market head unit for me today, not the neatest fit though, they used the 98-up lexus gs400 kit ..had to force it to fit. Cost me $75.
..Planned on changing the door speakers, but they sound pretty good now, with the new head unit (JVC KD-S890). They used the 4 RCA outputs from the head unit and wired it thru the factory amp.