He could list it for $1500, but looking at craigslist.com for Utah, $1500 seems too high. Maybe list it for $1k, and take something above $750. Non-running vehicles don't have much of a value, and those that due tend to be easier to repair.
With a working engine, he could likely list it for around $3500-4k(again based on craigslist numbers), and get around $3k for it. However, if he can't get an engine/+ install for $2k or less, it isn't worth fixing. He should just sell it for what he can get, or trade it for something he can use.