it depends on wat ur gonna do, just transplant with doing anything like overhaul or changing parts here and there, wont take long, around 1-2 weeks the most, but for me, plz plz plz change the engine bearings, clutch, head gasket, top set gasket and everything, would be much easier and cheaper, and u wont regret, well if ur car on loan, u have to seek bank approval for transplant first...