I think $25K is pushing it. I sold my 2007 JKUR with a 5.7 hemi conversion back in late 2012, early 2013. I had it for sale for over a year, and finally took something like $32K for it. It was an AEV kit, used motor with about 30,000 miles on it and about that on the jeep as well.
AEV lift, 37s, great condition, super clean, no damage. It was really hard to sell. Not sure why, but it was.
The only up side for me as that I didn't have a lot in it. I bought the jeep used in 2009 for cheap as the economy was in the toilet. I bought the motor and trans from a boneyard and did the conversion myself. If I would have had more money tied up in it, I probably would have never sold it for the price I did.
Its weird how a hemi conversion can be a tough sell. Hope that helps.