The transmission is inside the engine case. Maybe he took it out? Still worth getting for free without the engine. Find a used one here in the classifieds and you have a nice Z for $600-800. Keep or sell and make a grand easily.
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.