Picking up a 2014 5.7 in a few days...

Yes, if auto trans, would have MDS, VVT, and v-intake. At that mileage, the noise was very likely more than the "Hemi tick". Pull that engine down to the short block and look for a bad lifter with frozen roller that has worn a wide groove into the cam lobe. Doesn't make huge noise when they do this, but enough to know there something not right and should be brought in to a shop. Likely what happened here. Nice score on 5.7 with the Eagle heads. Do yourself a favor and replace the mds lifters with non mds if you don't plan to use it. Also, offer the guy $500. I'll bet he'll take it.

BTW, I suggest the lifter problem because this is a bigger problem with the eagle 5.7 than most people know about. Have had five cars in my fleet do this, including twice with one of the cars. Luckily covered under 100k warranty.