Trying to parse this out in my head … so a 48/12k lease on a $53k truck that seems it must have had 2k miles to start with? BTW, it is 43 mos left, not 45. Did you pay anything at signing? Did you trade in another vehicle at the time?
Did you also roll a ton of negative equity into that Wrangler? That is the only thing that makes sense to me In this equation since those hold their value so well.
If you’re offering $1000 incentive to buyer, you should probably mention that effective payment is a bit more attractive than original: 670 - (1000 / 43) = $647.
Like others said, this will be a tough sell here. +1 for swapalease.