Hey, I resemble that remark. I'm 62, and if I felt the need to swap chunks I would slide right under there and do it.
Every streeter should have at least 2 chunks. Unless you have a 5 speed. At one time I had eight, with a 4spd.
I installed a drain plug in my banjo; so 65 minutes on a hoist, from the time the drainplug goes back in. A lil more, if laying on your back, and feeling around for tools.
Rear ends shipped from the factory with a SG had a large X cast into the carrier. I seem to remember the X being around the filler-plug.............In addition to the tags.