They both have the "puma type" adjusters in them. I wish they gave a better description of them... That's a big price difference
. Maybe you can get some info from CSP about them.
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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