whoops... i took the number i got and multiplied by 2... ended up with $2200 instead of $1100, which is what it should be...  
 
so, you're making a solid 450-500 horse and a little more in torque?  i plugged them into DD2000, and that's what it spit out.  that's the neighborhood i wanted to be in.  and with a shot of giggle juice i could easily be in the 700 hp world.  
i appreciate you sharing your info.  the more input i get, the more i lean towards the Dart aluminum heads.  you state in your sig that you have a solid lifter cam, 1.6 rockers and .589 lift?  damn, that's tall.  custom pushrods?  how loud are those solid lifters?  is this strictly a strip car or do you drive it on the street?
hot rod mag did a buldup very similar to your setup with a 450 SBC.  it seems this setup will work on everything from a 350 to a 460 SBC, with good amounts of toque and hp, differing according to which block is used.
thanks again.