Greetings Mike,

I guess my real question after reading some posts was whether it required a jig set-up to ensure proper angle drilling? Then my next question is whether or not do them all or just those that wouldn't torque to spec without spinning? Have any idea on the tube spacers I found inserted between two of the bolt holes? If you have ever looked at your rocker arm and head holes where it mounts, it is over drilled to accomodate a tube insert of some sort. Just wondering if all four holes recieve them or what. The helicoils, are they metric or AS or doesn't it matter?

Charles

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'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan