My record taking the engine out of my own rally car is 40mins from driving it in, to having the engine on the bench. The last engine I took out was a 2002 STI last week and that was 1.5 hrs, always takes longer to go back, I recon on about 4 hrs from having it ready to go in, to driving the car, if all goes swimmingly of course. All depends how quickly the damb thing mates to the box, god i hate that part of the job!