I changed out 3 transmissions on a rock drive way. You have to do what you have to do.
I now have a carport so its a little better but I still only have 2 walls. I have thought about putting up 2 more walls but I don't think there is enough space to do the kind of work I want to do in a one car garage so I leave it like it is.
I put the small block 350 in my Fiero on my carport.
I also have a canvas garage that is about the same size as the car port for my parts car. It keeps me out of trouble. Out of sight out of mind.