If you cant work on your speed and maybe get really muscular then I'd say yea
My dad played fullback and he ran a 4.5 40 ( he also played noseguard in college ball
If your fast, you can use your height to your advantage and play wide receiver, or Defensive back on defense.
Tight end is a good place for you, if your team mates are taller than you then i would suggest there. Try linebacker or even nose guard, and if your fast try running back.
RunningBack
fullback?
Anyone you choose! - Most coaches would have you on the line
corner back
Cheerleader.
Defensive tackle
Bench Warmer
anything but defensive linemen
Waterboy.
if yoiu are fast corner, saftey, running back maybe fullback haha dont matter as long as you lace people
high school?.. sounds like you should try tight end.
Wide reciever, safety or cornerback