Wallace is 6'11" and weighs more than his listed weight of 230 (probably 245) .... Call him a C or PF... it doesn't matter. He's recognized as one of the best defenders of the Duncans & Garnetts in the NBA.
Mike Dunleavy: "He's almost the perfect basketball player. Great size, great athletic ability, great outside shot, great post-up game. He can guard guys off the dribble, and defend on the block. He's a total team guy.
Please read the Rasheed Wallace thread
HERE you will find lots of information about his game ... the history of trade rumors involving the Mavs ... and plenty of opinions on how he would impact the Mavs chances at winning a title.