It's been discussed once or twice before and without going into it any deeper than we have already... there it is! I really think the best bang for the buck is to find a Caprice with an LT1 and take the motor, put a T5 behind it and later upgrade heads and cam when you've got the money.
Don't let it scare you. I haven't done it (yet) but quite a few people have and they say that without prior experience it's not that hard. There's nothing wrong with carbs, I just wouldn't recommend it for a commuter and I can't afford to have a "weekend only" car. Just keep reading and you'll see pretty quick what it takes, I don't have all night to type and believe me - the info is here. Happy reading!