So, I have here pics of my original a12 base that came on my roadrunner. I was on ebay and found this other base listed as tripower and got a real good deal on it.

After some serious comparisons, it really seems as though the base has been factory trimmed in a trim die. The edges are too even and smooth to be done by hand.

Also, the transition radius on the original a12 base thats at the front and back centerline and meets the pan area is not as smooth and crisp as the other base thats trimmed.

is it possible these bases were offered over he counter or part of hustle stuff parts?