@ Lars - Yes, I saw that was possible using the Mopar 426 crate engine:
http://www.carcraft.com/techarticles/ccrp_1203_horsepower_426_hemi_crate_engine/
but I did not see an engine builder that was doing that for an off-the-shelf available option. Maybe the importer/dealer is doing the boring and stroking? If so, that's very ambitious "tuning"!
@RC - Cool looking Wrangler! Yes, I saw that BPE motor before, and 440 ci is pretty close to the 7.3 l mentioned. I think you said there was a warranty, correct? Nice!