The 392 seems to add ~$10.0k for cars and trucks compared to the V6 option. The diesel adds $6k to the wrangler from the V6.
A similar diesel build to the 392 is $61,000, so maybe $65K for a 392? $65K would be competitive.
What might add another $5-$15K for a 392 on top of the $65K? 2in lift and cast iron c's?