Not your day A&C
The engine is an IO-540. When it was o/h we fitted all new ECI Titan cyl. new lifters, new camshaft, new lightweight B&C starter and new vacuum pump, new mags. The fuel servo and fuel pump were o/h, the core parts were ok. In addition the engine was internally balanced and the cyl. were flow matched. If I remember correctly the lot was ~ $23-24k. The o/h shop was not one of the 2 that you think of but a shop in FL that has a very good reputation inside the USA and came second in a review of Aviation Consumer. This shop looked after me, on both occasions they paid for the shipping back to the US, re-o/h the engine free of charge with all new components (i.e cyl. lifters, camshaft) and paid for removal/installation of the engine (under warranty after first failure). This time they don't want to pay for the removal/installation but I am going to fight it as I also want another year of warranty as out of the 2 years that I had the engine was off for nearly a year. Time will tell.