I installed a Lilliput in my '03 Sierra Denali-has the same console and the Yukon Denali here are some pictures:
Also, this might be the prefab console your talking about
:
http://cgi.ebay.com/ws/eBayISAPI.dll...EBWN%3AIT&rd=1
Looks like the seller is no longer registered on Ebay though
A guy had one for sale over at gm-trucks.com:
http://www.gm-trucks.com/forums/inde...howtopic=26924
TheSpecialist on this board did a very nice install check out this thread near the bottom for pictures:
http://www.mp3car.com/vbulletin/show...4&page=3&pp=15