Trick Flow SBM Heads

I can't believe I'm even saying this and saying my friend LOL.. but either my friend hasn't a clue what he's doing or somehow somebody's numbers are pretty fantastic... 74 duster Front halfed - back halfed 440 Stroker tunnel ram now fuel injected from dual quads Dart heads everything possible fiberglass full effort...
View attachment 1715612393
Somebody needs to explain to me how is a stock compression 440 going to match this et???... Or is that story just 40 years of memory loss....

Indy maybe?