Well, according to my old Demon catalog...... downleg boosters would be a 625, which “should” have come with 70/78 jets.


The description states that the “Road Demon 625” has downleg primary boosters and annular secondary boosters.

The 525 has annular front and rear.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads