Let’s not get derogatory towards each other, that’s how the CDI vs R&D drama started, and I’m not interested in pointless internet jabsI sell these same clamps. I won't sell the 4 position to a Ford IDI owner. It won't work. Instead, I'll sell them 2 of the 3 position. They are at best, difficult to install, but you CAN get them on, and they will work. This kind of advice is the difference between calling me, and just clicking and buying.