OK, I'm a weird bird. If I'm detailing under the hood the spark plug wires will be in the correct order (years ago I put together a book of firing orders and, by golly, I'm going to use it!); the heater hoses will be present and routed correctly; the fuel lines will be there; the throttle linkages ... erm ... notsomuch (my eyesight ain't what it used to be and it's never been all that good). All that being said, I'm just as likely to just glue the hood shut and not bother with the engine at all. Like I said, I'm a weird bird.