I am curious if Ford could do a pin system on the Expy? Perhaps maybe even a Torsen rear may be a better solution? There are obvious differences in axle tubes vs CV axles, but they run a Torsen front end to lock the Tremors. I am sure glad I optioned the locker, in May I am installing a stage 2 Whipple on my 5.0L V8. With 800 horsepower the locker is my only hope for a halfway decent launch. I’ll report back if my 5.0 starts snapping pins!! lol.