Justin-
In my experience, Parents, especially if they're not into cars, will NEVER understand "hotrodding" a vehicle. Luckily, my dad is a bit of a car guy, so he's been pretty understanding over the years as I've taken a perfectly functioning reliable vehicle and screwed it all up with go-fast parts.
I did it to my Supra. It was a nice car, reliable and a joy to drive on a roadtrip. Now it's a 400HP monster. It's still a hoot on a roadtrip, but rides a bit rough with the stiff suspension. I spent many weekends under it just hoping to have it back together in time to get to school on Monday. It got to the point that I needed a "driver"
So I bought my Toyota pickup from my Uncle. He bought it new in 1984 and it was IMMACULATE when I bought it in 1998. It stayed stock for about 30 minutes after I bought it. I immediately put some new wheels and tires on it, and the 4x4 bug had bit me. Now it's not even street legal. All the while, my dad thought I was crazy for tinkering with my "driver" while the Supra was still down with a blown engine....so I bought the Ford to tow the Toyota pickup to the trails...
...And then I decided that my really nice Ford was too slow, and started to tinker with it. Pretty soon a Turbo, Intercooler, and exhaust was on...then a little lift, some wheels and tires, then the stereo, then...
It never ends. Just hope that your parents understand a little and will lend you their "driver" when yours is down.
You'll get it, and it'll be great when it's done. Just be patient and remember that nobody we know can afford to do it all overnight. If I had that kind of money, I surely wouldn't be tinkering with my old Ford...
Ryan