Hey man, welcome to the site. I have a '77 that I'm trying to build to do the same thing. If you need any info, I'm here to help. I'd also hit up the guys at
www.nastyz28.com for as much info as you can get. Most of your money may be going into suspension/wheels/tires, so I'd think about selling the big block for a small block or LSx motor. Remeber, second gens are actually better handling cars than most people give them credit for.