The “dot” was added to the 71 M-code’s D1AE-GA closed chamber 4V heads just after production started. I have seen several early June ‘70 cast examples sans “dot”, but everything after has it.
The “dot” was added to the 71 M-code’s D1AE-GA closed chamber 4V heads just after production started. I have seen several early June ‘70 cast examples sans “dot”, but everything after has it.