Although I have installed a Mustang II IFS (kit from Progressive), I don't have the info you're looking for. I think you're looking for Chevy1's excellent site:
http://50chevy.freeservers.com/topics.htm#Topics My two cents - even though it isn't on the ground yet, if I had to do it over I'd stay with the straight axle, rebuild it, go with disc brakes and still have money left over for more "goodies."
