1973 340/360 heads

I wish I had received this advice 30 years ago, can't believe the things I have scrapped over the years. These may not seem valuable now, but I think this fellow has provided some really good advice here.
thanks I try to do it but runnin out of space need to build a lean to on the back of the garage enough for one car and tons of parts like body parts and any other big parts.
Got a 3 car garage and can fit 2 at the max