Those LSJ oil pans are rare to find. I had a cracked LSJ oil pan on my original LSJ, and my new donor car also came with a cracked LSJ pan.
I couldn't find a stock LSJ replacement, so I decided to try and fix the pan.
I cleaned the pan, used fluorescent die to identify where the crack was, and tried to TIG weld it.
Knowing that the aluminum is oil soaked, I heated the area slowly, to burn off any oil deep in the cast aluminum.
The moltent aluminum kept boiling off contamination, and I couldn't suceed in welding it.
So I stopped heating it, and left it to cool down.
Once cold, it looked like lava rock, with lots of texture for epoxy to stick to.
So I mixed up epoxy, glued the inside of the pan, and it has been working ever since (2+ years).
Never had a drop of oil on the floor.
I am going to be trying this again, on my newest LSJ oil pan. Not sure if you are interested... but if you want to mail your oil pan to me, I will give it a try with mine. Anybody have a recommendation on how to weld oil soaked cast aluminum, please let me know!