OK, First I think your talking about going from a AFM (air flow meter) To a MAF (Mass Air flow). I am currently running a stage 2 Huntley RAcing MAF kit that is no longer in production. But From what I understand FR-wilk will be comming out with a MAF conversion full plug and play very soon. Now I have alos heard of some guys running Ford MAF's and stuff, try doing a search and Im sure you will find some nice stuff. Also if you wnna try something else Guru racin also have MAF and MAP conversions. Also check out this web site
http://www.splitsec.com/ They sell MAF kits and its basicly the same thing as my Huntley Racing kit.