The tooling to stamp those parts was not cheap... SB parts anyway. So, one company most likely makes them, and the one that buy's the most at once has cheapest price. Some companies may also pay more to pick out the best ones.
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1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans
1962 SC 1776cc SP 944NA brakes, 993 wheels
VKG
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