I'm considering buying a 2006 F150 supercrew with a 5.4L and 232000kms or 158449 miles . I havent physically seen the truck yet, just pics from an add and emails back and forth with the owner.

First off, is this alot of Kms on this motor? What is the life expectency of 5.4L?
Secondly, Its an "as is" deal (wife owned divorce sale) so its not safety inspected. If I buy it, is there anything in particular that I should be paying more attention to so I dont end up having to dump a ton more money into it after buying it to make it roal legal?