The vast majority of big block Mickey Thompsons were Made In Japan. They're slightly inferior aluminum quality and have a few cosmetic differences.
The Mopar Performance were cast in three foundries. Originally available as- cast/natural, polished or black wrinkle, all were discontinued a few years ago.
After restoring/customizing dozens over the years, I firmly believe the very best castings were chosen for polishing, the next best were sold as-cast, and the absolute worst ones were heavily covered in black wrinkle.
Casting quality is all over the map, typical of sand cast aluminum. The ones cast in California were usually the worst and needed the most bodywork.
And then there's this
It's been years, and my pics are gone now with site updates, but the fact remains that the dog ears left the factory with metal defects no one was inclined to do much about, leaving nearly every victim believing they simply over-tightened them.
These days the MPs are still very popular with enthusiasts (I'm working up a small block set right now for a guy in Australia). If you can find an intact set under $400 consider yourself lucky.
My guy just got half his money back last night as timing would have it. He wasn't so lucky ...
Custom Powder Coating ...
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Hit me up if I can help with yours when you find some! (I have one set in my stash with one knockout opened if you're inclined to get them dolled up.)
Here's a few ideas on aftermarket covers to spark your imagination.
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