Yessssss do head work!!! I am so stupid because when I blew my head gaskets, I did not even have the heads inspected and my car has NEVER run the same. I was working for Ford at the time, and had them replaced in one afternoon for a good deal because at the time it was the only car I had to get back and forth to work in. I wish I had taken the time to have the heads checked out and reworked, maybe my Stang would run a little better now. Good luck with your swap!
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Elisha (Mustangbelle)
1994 GT: Cartech intake,4.10s, full exhaust, and pulleys.
Sold the 1986 LX sedan
http://www.geocities.com/mustangbelle_306
AOL name: GT306Chick