Full engine replacement

Here's a site that has new long blocks available http://www.parts.com/oemcatalog/index.cfm?action=getJointLocator&siteid=2&chapter=&sectionids=10,0&groupid=60990&makeid=31&model=L%20Series&year=2002&catalogid=1&displayCatalogid=0 but probably cheaper to find a engine re builder but make sure the company has a good warranty and has been in the business for quite some time.