My 1983 Turbo Esprit had 40,000 kms on it when I rebuilt the engine and pretty much did a total resto on it (14 years ago)
Previous owner did lots of things to it that he thought were improvements that led to the car running and sounding like ****, so I just bit the bullet and went through the whole car returning it to as close to as originally Lotus built it as I could.
P.O. had traded it in at a Lamborghini Dealer in for a Ferrari Mondial, he probably ruined that too.
When I dismantled the engine, the bearings were shot, one of the pistons was new (I presume the original had melted), the other 3 were peppered in detonation marks (he had raised the boost)
Cast iron liners were scored, but honed out OK.
Head wasn't too bad, put new valves in.
Spent about $10,000 in parts for the whole car.
Originally paid $15,000 for it which seemed like a bargain at the time (2000), If I hadn't have come along it would probably still be in the underground parking lot at the dealership today.