These might be of assistance...
http://home.comcast.net/~jelerath/mu.../heads-fr.html
If you're looking for cheap heads that flow better maybe look for some GT40P heads while you're in the 'poverty stricken due to build costs phase' - these two links have some tables and other info that you may find informative:
http://www.stangpro.com/html/article...les/gt40p1.htm
http://www.stangpro.com/html/project...one-intro.html
Some serious builders I've spoke too just about choke if you mention the GT40Ps & others think that they're fine for most applications. However, if you're able to afford them a nice aftermarket set can make a significant difference to potential flow and HP - you can see some #s in the site below:
http://www.bacomatic.org/~dw/fordhead/fordhead.htm
As is pointed out often - the comination of what you're doing/want/can afford will guide your decision, heads/cam/carb & manifold should be complimentary.
Good luck
ta
LoBelly