Hello all, looking at build a 455. Want to be in the very low 12's. I'm wondering what sucess people have had with the Edelbrock cylinder heads? What kind of power they are making, suggestions, afterthoughts, ect. Would love to hear a few engine combos with these heads, and the results. My car is a 1970 skylark 12 bolt 3.55 gears, turbo 400. May switch to the 200r4. The stage 1 conversion cyl build is too close the the edelbrock price.:shield: