In my opinion the only way a pinion snubber works is it must be adjusted to within 1/4” to 1/2” away from the floor pan. If your front suspension is working properly disregard. The reason why is remember, Mopar leaf spring cars rises in the rear at launch and then settles down. That means the floor pan goes away from the snubber making it useless. Also driving the car around on the street you will feel every bump.
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