Super Duty 455 Engine out of a 1974 Trans Am SD 455 . Original Engine Block and the Famous Nr. 16 Round Post Heads , both Numbers match with nearly identical Building Codes ! Perfekt for a 74 SD Restoration . 
Its a older rebuild and tuning and it was running pretty well ; Domed Pistons , over 10 to 1 Compression , High Lift Hydraulic Camshaft , Matching Lifters and Valve Springs , Titanium Retainers , Aluminium Water Pump and a very rare Aluminium RAM AIR IV Intake Manifold . 
The Bearings have to be replaced , there is time for it and thats why the Motor came out of the GTO  where it runs for a few Years . 
If your really interested ask for more information . The Motor is in Switzerland and shipping is not cheap , around 1500.-  to 2000.- and it takes some time to have it in a Plane for shipping !