And I'm the guy that can point you in the right direction on getting your tank drilled and even the pump you'll need. heres a really good web site I bought my over flow kit from, the kit even comes with the drill bit you need.
These guys are good friends of mine, They will hook you up I guarentee it.
1-805) 598-1706, Ask for Mike or Scott V. OR
Glass-Holes.com dope aquarium stuff
Good Luck Brian Coble