Yes, and no.... they aren't complicated engines, but they are stuffed upside-down into the back of a pretty small access point, and you have to pull the engine to change a spark plug ;~D
But except for that ;~D
Well, you know we've got this great 25'x25' shop...it's got a beam that goes across the ceiling and 10 florescent lights in a drop-down ceiling. It's carpeted on one side, has a big sliding door where you can pull a car in (painted concrete on that side). It's sheetrocked, heated, has AC, a fridge and bed. I used to keep my old Windows 95 HP computer out there.
When OT came to visit, she parked her car in there...it almost feels like your driving into a room in a house!
It's got a ventilation system and a pipe that comes from the garage where you can hook up a air compressor...the guy that lived here before us restored old Mustangs...