It's easy, I just did mine about a month ago. Here's a Scoobymods install tutorial. Make sure to have some cutting lube on hand for drilling the cast iron. A hand drill will work fine, as long as you take your time. EDIT: I see you're in Saint Paul. Feel free to PM me if you need any help or have any other questions.
Dude, if you haven't started modifying your exhaust manfold yet you should trade with me. Mine's already drilled and tapped and I'm trying to put my car back to stock. The only question is whether the Defi EGT probe and that GReddy one are the same thread size.