I bought my Edelbrock Alum heads about 6 mos ago and really like them. My reasoning (to my wife) to justify the $1300 was that they would disapate heat better and help the engine run cooler and the reduction of about 50 pounds would help the handling.
I also noticed the additional horsepower but it wasn't as much as I expected. All in all I recommend them for all the above reasons plus astetically they look Darn Good. Edelbrock packages them well and they fit perfectly. If you do change out your heads you might want to pull your rocker arm stands, shafts, and rockers apart and vat them well. Be sure if you do this yourself to use a brush to clean out the shafts. This will improve your
oil flow considerably and a very easy job (just looks complicated).
Clois Harlan