Yes, i think they do. i dont know about fastlane and so forth, but i have ordered individual carpet peices for my 84 300D from hoehn mercedes at wholesale price. the only thing is, examine the fading in your interior, if you have little to no fading, then it will match nicely. if you have a lot of fading, then it might not match up.
I didnt know the part number on mine as well, all i did with mine is talk to mitch and explained the carpet peices and i got it.
1-800-675-1993 <-i think this is there number, my PDA is not by me right now, if its not 800 then its 888. anyway, ask for mitch and tell him johnson chan sent you. maybe he can help you.