Here is the site you need:
http://www.rockyjennings.com/ click on H20 to Air in nav bar on left of screen.
A few other shops are machining the cases also, but this is the main one.
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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