16yrs old, first car advise?!

With a big block in there you it'll run great straight but a strong 360 turning will be lot better. I did the same thing with mine bought a 383 to swap the /6 with. Got the motor apart and found would cost more to put in a big block converting my steering k member exhaust and did a small block instead. My thoughts enjoy the car now save up and get everything you want at one time so you have less down time. My mistake of instant gratification cost me seven years of lost drive time to do the swap instead of driving it. Your in high school show that bad boy off now. When your out of school life happens. Time is more valuable. My son drove his mine to high school and they gave him his own parking spot up front. Was pretty cool