So, last weekend I finally had the time to go through with my plan. Honestly it was pretty easy (take into account that my engine bay was already stripped and I had disconnected everything prior). I did the whole procedure myself, and would only change a couple things:

Luckily I test fitted my steel tubing over the 4x4's beforehand. I had to grind/sand down the corners of the wood, just slightly, so the steel could slide easily over. This took some time because all I had was an angle grinder. But, lesson learned, make sure you do the test fitting ahead of time. You would not want to be in a position where the car is in the air and you are forcing the 4x4's through the steel tubing.

Other thing I forgot to double check, was the total height of my jacks. The jacks worked great and the set came with a nice hand crank as well as a drill attachment for quick adjustments. Only thing was that I needed the height to bottom of 4x4s to be 31" and the jack when maxed out only went to 24". So needed to improvise and make shitty blocks out of the only wood I had lying around.


It worked out pretty much as I had planned. Just took my time and ended up walking around the car quite a lot, jacking up each corner a little at a time.
It may have been easier for my car, since the interior is totally stripped, doors are off, rear quarter panels are off...so its pretty light.

Here are some pics:
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Make sure to test fit that these slide easily!
those are hockey pucks JB welded to the top of the steel tubes

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I did have to originally jack up the car a few inches, in order to add in the 4x4 steel tubing.
Also I angled the jacks so they weren't all facing the same direction...thought this would be a little more stable.
however, knowing now that I need another 7" of height, Ill make a nice wide base for each jack

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Once there is daylight between the jacks and the frame, inserting the 4x4 crossbrace added a lot more stability to the jacks.

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There was a little flex due to the casters, and my car will be up for a while, so I added some 2x4 braces below

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