How far in Cam to tap Cas

[98mitsubishigst]

Im having a shop tap my intake cam for me for the 97-99 CAS.
now i read

17/64 drill bit drilled to 1.48 deep
M8 X 1.25 tap 1.37 Deep.

Is this right?

 

[Rob10_99]

Sounds about right for depth, couldn't tell you what the thread pitch or drill size to use atm.