Modify your stock "Lancer" gauge to accept useful gauges

So, most everyone here who's sat in at Evo has likely noticed the worthless "Lancer" "gauge" in the dash cluster, that Mitsu could have easily used for boost, oil pressure, anything relevant that would HAVE to be added later as a result...

This is copypasta from EvolutionM, original thread here:
http://forums.evolutionm.net/evo-how-requests-questions-tips/260786-how-modify-your-stock-lancer-gauge-accept-useful-gauges.html

This is probably how I'll do a wideband in my car when I get around to it.

 

but how will you know when you are "Lancering"? that seems like something important to know, other wise the mitu team would not have put it in.

 

Oh, we're always "Lancering."

Lancering as fuck.

 

Which wideband were used to accommodate the space? And is that a wideband o2 gauge?