there is a guy on ebay that sells a motor kit just for this purpose. has instructions and new brushes. i think he sells them for 20$. his old name was kbnorthwest he just changed his name a while back but if you go there you will find him.
1972 350sl Red/Blk 117k
1988 420sel charcoal/Blk 140k
1987 420sel gold/tan 128k
See My Cars at:http://mysite.verizon.net/res0aytj/index.html
Pound it to fit then Paint it to match!
There is only First Place and Varying degrees of last!
Old age and deceit will overcome Youth and Enthusiasm every time!
Putting the square peg in the round hole is not hard... IF you do it fast enough!
Old enough to know better but stupid enough to do it anyway!