There is no such thing as the best heads. It all depends on your setup, future plans for the car, price range, and how fast do you want to go.
You said for a street car so you want to find somthing with small runners that flow good with out a huge valve so you have good power down low. If I were building a street car I would look a a set of iron windsor jr's with a little port work. They have a nice price tag and good quality. Not that there is anything wrong with the performers, but I just world castings.
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79 hatch w/ NA 347,stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II.MY CAR
http://www.mustangworks.com/cgi-bin/...splay.cgi?1288
93lx all stock + tremec
[This message has been edited by WADS56 (edited 10-05-2001).]