5.3l 4l60E Opportunity, need guidance.

[lts70]

I have the opportunity to buy a 5.3L /4l60E set up from a guy. It is said to come out of a 2007 Chevy half-ton 2wheel drive, with 97,000 miles. Wire harness has already been re-pined and computer reset up for non-smog. It has a GM performance oil pan to clear cross-members. He had it set up for a Camaro build but realized the truck intake was too high for his hood clearances. He mentioned that he has the brackets for accessories as well. He is asking $2500. Does this seem like a good price? What are some questions that I should ask him? It would be going in my 70 Chevy swb. Thanks for any advice or help!!!