here's my 626. but interior wise its pretty much a mx6.
my baby is my mazda6. and this 626 is the beater. but my g/f does drive it a bit, and i wanted it as nice as possible.
here's what i can remember doing. but i probably forgot alot also.
Rare OEM M-Edition mx6 leather front seats
Rare OEM Stainless "626" door sills
stainless gauge cluster rings
leather E brake boot
OEM leather/chrome mazda6 shift knob
full red LED gauge cluster bulb replacement
OEM 3rd gen protege cubby hole under radio
touchscreen flip out dvd player
OEM 3rd gen interior chrome handles (direct replacement for 626 color matched plastic ones)
front and rear infinity speakers
alpine 4 channel 500 watt amp running running interior speakers
kenwood 800 watt amp running a single cerwin vega 10in sub.