saw a turbo'd vs commodore the other night. was on a local cruise.
had a peek under the bonnet, turbo sitting in the middle of the V (normal for a v engine i hear).
dunno about the performance or any other mods, i'll try and find out. sounded good spooling up. there's a guy on www.performanceforums.com
that has a turbod EA.
seems the cost for this kinda thing is huge. have to replace gearbox and diff as well. can't see this happening to my mighty EA until i finish uni