Let me be clear on this " I don't claim to actually know what I'm talking about, unless I'm drunk. Than I claim it, but it's just not true.
Look up HemiDenny, and write this off. I made enough mistakes for everybody on the forum. You car is narrower that the 1967, and up A body. I think if you narrowed it in the center, you be narrowing your oil pan clearance. If you narrow it on the bend, you could change the height, and you still need your strut rods to align. Look up HemiDenny, and ask him if he has something for you, it'll cost a lot less money than cutting stuff up, and praying you don't make mach up scrap.