Ah, the never ending debate...
It should be noted, that there are actually three different questions that people percive from the single quickjack question...
1- Do the quickjack HOOKS face in or out. In other words, do they point towards, or away from the body.
2- Do you put the nuts in or out, part 1. Do the nuts get exposed visually on the outside of the car, or do they go on the inside of the car, leaving the bolt heads exposed on the outside.
3- Do you put the nuts in or out, part 2. Do the nuts go on the inside of the quickjack lip, meaing the verticle jack hook is towards the outside of the car, or do the nuts go on the outside, where the jack hook upright faces the grille opening.
Here are "my" answers to these questions, based on what I've learned..
1- I feel the hooks should face out. I don't see any reason they should face in, from any mechanical standpoint. Facing them out, gives more clearance for the bar across the body and makes it visually easier to slip the bar in. The only reason I can see for putting them facing in, is maybe the guys at Shelby were smacking their shins on them and decided to try them that way.
2- This one is kind of a no brainer. Nuts are always exposed. There are no bolt heads, original jacks were mounted with threaded rod, so they had nuts on both sides

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3- This one is always a hot debate. But after reading everything people have to say about it, I have to agree with Ron (computerworks) in that there literally was NO right or wrong way. They were just installed on each car randomly, and matched to however they were put on.