Normally there are three, front and back, and middle of the exhaust. The front one straddles the thermostat, the rear straddles the number four intake runner. To lift just the engine I transfer two of the exhaust ones ( had lots of them in stock) to the middle intake manifold studs and lift from there. That allows you to angle the engine longitudinally easily, and also to tilt it side to side with little trouble. I think the Volvo three point lift depended on a rig to permit angle changes. Doesn't work well without that rig.