16yrs old, first car advise?!

Sell that stuff, drop a stroked 360 in it. Same price for the bottom end from summit As the 360 stuff of you want more power. But I'd leave it be for now. Fix the minor details and save up for an engine you want. Swap it when you have time and learn, I mean hang out with the older guys, watch them and see what they've built. Ask for as much help as you can and always mock things up before you make it permanent. Everyone here on FABO is fantastic. Someone knows the answer somehow or another because we've either done it or doing it. Fill your head with as much knowledge before blowing tons of money. If you can't do it, learn to do it. That way in the end your not one of those guys at the cars shows that doesn't know a thing about how it's built. You'll be one of the guys who did it and that to me makes the car worth so more. Welcome and that's a really clean ride.