I have these two shift knobs from my lancer. They both fit the stock threads or after market lancer short shifter threads.
The chrome one came with the Fidanza short shifter. Its not weighted very heavy but it looksgreat. $20 + shipping.
The satin one is from TWM, its 2 inchs round, weighs a nudge over a pound and greatly increases shift feel and actually sits lower than the stock peice. you dont need a short shifter with this knob. though it is height adjustable. I absolutly love this knob and plan to get the same one for my speed 6. so somebody buy this thing so i can get a another. The sell for just under a 100 bucks on the web site, i'll take half that. $50 + shipping.