Have ya seen this web page ?
Don't know if it's anything you're after but thought i'd mention it.
A 360 is $1855 total with shipping and if you have no core.
A 401 at $1790 + $265 ship aint too bad but $900-$1100 401 core charge, ouch !
The 390 has a $3000 core charge, wow !
http://remanufactured.com/AMC_Jeep_Engines.htm