Forget the coupon.. I figured out a better way to obtain the information anytime I need it. If anyone needs a CarFax, I can get one anytime for a small effort/time fee of $12. I don't have access to it directly so I have to pull a few strings.
By the way, I found out that the "88k" engine I was looking at actually has 113,xxx on it! This means that I am going to go into the place and hustle the F*CK out of the guy for lying to me.. and/or look for a lower mileage engine. And he actually was comparing how legit he was as opposed to a neighboring salvage yard who he also knows, and realizes that they do shady deals. 113k isn't bad for what I need it for - just the bottom end.