blake, as far as mlst I'm not that knowledgable being I've never had one but I know you can go the new era route, which is pretty expensive:
http://www.neweramodels.com/cgi-bin/item.cgi?session_id=&part_id=3116 I paid about $10 total for everything (not new era) at the lhs for my setup.
Ratzo, I didnt notice much, however it seems to handle better when going fast on bumps. Before, if i drove full speed up and down the curb it would most likely flip, however for the few tests I did, it never rolled.
There is a guy that has his car setup as an indy almost with mamba and 4c lipo. He says it helps dramatically when reaching those high speeds of around 80mph. Because without those wings, it would litterally lift off the ground.
Thanks for the nice comments everyone.