X-Mozilla-Keys:                                                                                 
Ed Anderson wrote:

Thanks Brian,
    That fits as the 87 Turbo II center housing still has the knock sensor
so probably the rotor housings are later vintage as advertised.

Ed.

Ed are those two set screws exactly along side the plug. If so
there is a web there so it may be an embedded thermocouple
mounting. No water jacket behind that. The knock center boss 
on my late rotor housing is above the leading spark plug. 

Paul Lamar 
 
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