Twin plug lower covers

[78 STROSEK]

I am almost done with my 3.3 turbo twin plug motor. I need to cut holes in the lower covers for the plug wires. Any advise, and or pictures out there?
Eric

[cgarr]

I do ours on the mill with a 1" end mill since we only use 12mm plugs but if your careful and get past the webs a good sharp hole saw would do it, The center holes are going be be almost on the web. screw it down to a good block of wood then back cut the webs with a die grinder..

[sjf911]

The machine shop that twin plugged your heads will usually do the covers as well as part of the price.