Good:
350/465/208 is a reliable combo with excellent gearing
TBI
Bad:
Axles are 28 spline unlike the 30 spline that he claims
Eaton locker is a gov-lok, they like to explode with tires bigger than stock
Lift could be pro-comp, which I'm not a big fan of (ask him about that one)
$2700 is a lot IMO
It depends on how good the body is and how much you want this exact truck (there probably aren't very may 4 speed stepsides out there). I think $2700 is high, but he probably spent a lot of money having someone rebuild the rear end and clutch (hence the high asking price).