Please don;t take offense at this - you're young and I've been there - I get it. But I think you should just start with what you have. If you want to be a great bracket racer - the best and most successful started with bone stock slow cars. You need track time and to take some bulbs. If you're good enough you might actually win some money too. Modify what you have a little at a time. If it's a slant 6, get so you can repeat reaction times (the car will repeat on it's own once you're moving). Then look at swapping in a milder V8. Tweak that until it's perfect and repeatable regardless of weather. Then upgrade the rear end and suspension with an eye to going faster. Then update the chassis for the same thing - all the while racing the car as much as you can. You'll get to be a much better racer by paying entry fees and racing slower than buying parts to sit on a shelf while the car get's taken apart and can't be reassembled because there's no money. Racers get good with seat time - not by going low ETs. Everything you've asked about by virtue of that last sentence tells me this is just a pipe dream at this point. A baker needs a recipe and patience long before he needs an oven.