WILL a 315/70/17 wheel & tire package damage the gearing of the 2.0 JLU Sports front differential?

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No, it will NOT damage anything.

What "can" damage things is if you install new gears that are higher than 4.88. That will leave you with a pinion that is really small and that can cause a failure. But, with just 315's, there is no need to go any higher than that.
 
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The same shop also tells me that all I need to achieve a 2” lift is to replace only my stock springs. There’s nothing I’ve found on this forum so far to support this. Being an aircraft mechanic I tend to over estimate my automotive maintenance knowledge sometimes but this just doesn’t seem to be true to me. Or better yet, safe.
 
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Wrangler21KSA! said:
The same shop also tells me that all I need to achieve a 2” lift is to replace only my stock springs. There’s nothing I’ve found on this forum so far to support this. Being an aircraft mechanic I tend to over estimate my automotive maintenance knowledge sometimes but this just doesn’t seem to be true to me. Or better yet, safe.
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For a 2 inch lift you will need to change springs and shocks. If that's the route you want to go, look at the Rancho 2 in lift. Eddie has a video of him installing and testing it
 
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Dale72 said:
For a 2 inch lift you will need to change springs and shocks. If that's the route you want to go, look at the Rancho 2 in lift. Eddie has a video of him installing and testing it
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Yup, what he said ^^^^

This is what I would recommend
 
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wayoflife said:
Yup, what he said ^^^^

This is what I would recommend
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As an expatriate my living situation doesn’t give me a garage to due the installation myself. So I may have to buy the kit when I come home for vacation and mail it to myself and find a shop to install. I’m missing my garage, tools and motorcycle right about now.
 
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Wrangler21KSA! said:
As an expatriate my living situation doesn’t give me a garage to due the installation myself. So I may have to buy the kit when I come home for vacation and mail it to myself and find a shop to install. I’m missing my garage, tools and motorcycle right about now.
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No need for a garage. Just flat, dry, solid ground.
 
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