While I haven't worked out the math myself, Mike claims a motion ratio of 1.7 which is similar to Shaun's I believe. The lower shock mounting point on the MMI is sort of under the ball joint if you look closely.
Mike touts the superior JRi shock. I am not sure it is superior to Shauns Bilstein. At the end of the day, it's all about valving.
Comparing Mikes Mod 1 to Shaun's (having never driven neither - I have Global West) I think they are similar.
MMI- Mike is a world class driver and you get that experience. He's also not afraid to think out of the box.
SoT - better value and great support customer service.
If I were comparing the MMI Mod 1 to SOT to purchase, I would likely buy the SOT due to price.
If I had unlimited money and fab skills, I would buy the MMI Mod 2 setup.
372 Cleveland, 4 speed, 9" T.50 Trac Lock axle, Toploader, Global west suspension, Big Lincoln Trans Am Brakes front, Eldorado caliper/ MK VII disk rear.