Assassin traction bars

After discussions, debates, conversations, research, and measurements, I have just ordered a pair of the Smith Racecraft Assassin bars. On my 70 440+6bbl 5 speed Roadrunner, I wanted to see what the ground clearance would be.
Caltracs are 5" down from the front leaf spring eye, Assassins are 4½" down, and the low profile Caltracs are 3½" down, so I'm ½" more ground clearance than the regular Caltracs, and 1" less clearance than the low profile Caltracs.
I'm pretty sure my header collectors/Doug's electronic cutouts would scrape first.