Just fine to drill to route wires. Just remember to use masking tape and drill thru the fiberglass in reverse, then normal. You also have to use a countersink bit on the hole when done so no cracking happen. Vacuum did not work for me so I just used mechanics wire to fish it all through. Not sure on the drive, I need to do mine too. Check out the moomba forum, lots of good help there.
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