I think they are probably maxtrac or something similar. There are only like 2 foundries that cast drop spindle blanks so they are pretty similar.
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Yep, those do look extremely similar.
My past purchases with Belltech stuff for 1500's looked very different, more of a solid appearance than those relief areas in the casting, that's why I said they definitely weren't Belltech. Plus the 2400 or 2500 part # in the castings is usually pretty easy to find.
Blurry old pic but installing a set of 2500's on my old '94 Suburban.. OEM and Belltech
side by side. Back before I figured out you don't need a pickle fork to do this job, and it goes better when you don't. Just need the hammer.
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Richard