Does anyone know what kind of grease is used to seal the power booster boot to the booster? It looks and feels like silicon grease?

Girling makes a grease that should work. It is used for brake seals and rubber components. Try a British auto parts store or some place like Pegasus who sells formula ford type supplies. http://pegasusautoracing.com/
Their part number is #3306 Brake Assembly Lube.
David

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Check my web page for First Gen Camaro suspension info:
David's Motorsports page (http://ourworld.compuserve.com/homepages/David_Pozzi/)
First Gen Suspension Page (http://ourworld.compuserve.com/homepages/David_Pozzi/first_gen_suspension.htm)
67 RS 327
69 Camaro Vintage Racer
65 Lola T-70 Chev 350 Can-Am Vintage Racer

[This message has been edited by davidpozzi (edited 10-21-2001).]

Thanks David.