sorry to all.forgot to mention.
89 actually combination for 85(humbucker),60(single coil).
so,u can switch 81/85 or 81/60.
blacktrix,u no need to drill hole in ur baby
just install at volume controller knob.very easy.push/pull at volume knob.
evalshtog, 81/89 per set totally expensive.new one almost
rm900.ask woh fatt or bentley for info.but i think now they no have stock.
try buy at e-gay
but i'm bought 2nd from my member last week.so,it's very cheap
if u swtich 81/60,soloing very superb.the sound..fuhhhhh............like michael angelo batio and yngwie malmsteen

if u arpeggios,the sound very clear.u can hear note per note.
and also plucking,fuh..fat sound
60 is single coil,so thats why the sound very nice.