possible used sources
"While some believe there were no cars made with this engine, a very small number of early Eagle Premiers - modified Renault Medallions - were built with the 2.5 in 1988 and possibly 1989. However, most found their way into the CJ7/Wrangler, AMC Eagle, Cherokee, Comanche, and Dakota."
At our u pull it Dakota and Cherokee probably best bet to find one
Under 1K plus core sounds like a reasonable deal
no experience with which rebuilders are better