Wow thats an interesting concept.
Philly is projected to go 12th in the lottery:
http://sports.espn.go.com/nba/draft2007/index
Though not my favorite, I guess there could be some chance at Noah at 12. According to the top 10 he is estimated at 10 with falling stock.
Other big guys could be Spencer Hawes, Roy Hibbert, and Marc Gasol.
Marc Gasol is interesting. Pau's brother. 7'1" and 270 lbs. Said to have soft hands and has a good post game.