I noticed you asked for this about a year ago...
I thought the right advice was given
Buttons are replaced from overseas units or you can buy a whole US cluster and rewire the unit
with opposite button locations as per LHD.
However, I do have for sale a set (LH & RH) of JA switches with silver highlights (early JA). $250 plus post.
Or, if you send me your broken switches, I can repair for $100 a side!
88 GSR-VR Widebody 2.6L
87 GSR-VR 12V Dash 2.0L