jack stands
John, you will recieve many kinds of ideas, here is one.
I have a heavy duty floor jack that will lift one end of the car off the floor about 18" I then put the front ones in first to utilize the parking brake in addition to the wheel chocks for the back. The placement to me in each operation depends on what I am working on, for instance, you don't want to work around a stand for access to the transmission. So I put mine as far back that looks like a good spot and sturdy. The X points on each side are good spots.
After assuring myself that the front is solid, let the jack down 'slowley" to watch the settling down of the car frame on the stands. If you have some heavey rubber to sacrifice, put it between the frame and the stand. This keeps slippage down to a minimum. Some will put in a small block of wood, as I do on occasion.
Then I move the jack to the rear, and with a piece of wood, mount the jack on the "banjo" of the differential. Raise the car slowley and install your jack stand on the spring mounts or under the axle housing.. again rubber or wood. your choice.
Remember, a transmission removal will require the car to be a bit higher than normal , because of the bell housing and shoulder room.
Always safety first, block the wheels and make sure you have someone helping or checking up one you ocassionally.
Another thing, if you do not have wheel ramps I would advise aquiring a set or two. If you don't need to work on the wheels these are a great benefit... Here again, wheel ramps made of steel ar good, but tend to slide if trying to drive upon them on concrete, I use wood to put them on.
The rubber or wood,,, steel on steel is not too safe..
Well good luck.
A pit would be great...
Chuck in Portland