Cam for torque question

The plus 7* is from the dash-mounted dial-back timing gizmo.
Yah, I been watchin you...you got some pretty cool stuff, dial-back timing gizmo...I want one!! Gear vendors I thought I read....I've been thinking about that option too for a long time...I would get quick and fast in 1 package...eh...prolly not sounds like split shifting em is troublesome for most.