Ask him for pics of the engine bay, along with the pic of the dyno sheet laying on the engine bay for verification. Surely he must have plenty of pictures if he does "all of his own work."
Examples: His dyno sheet is dated 17-6-2004 (6.17.04) and he's just
now posting on a mustang msg board about it. Also, he is a "new" member. His ET/MPH are "interesting." I like how he changes the topic to the Bigred camaro btw. LOL Red flags have been raised...
...hmmm, I suppose if a flamefest starts in that thread, it would be too bad because I would then have to lock and/or delete the entire thread...