Here's a D-linemen for you. He may be unproven, but what he has, athletically, can't be taught...you could argue his arms aren't long enough, and that could affect his ability to shed blocks, but this guy can motor.
Louisiana Tech
DI Milton Williams
Height: 6'3″ (50th percentile)
Weight: 284 (17th)
Arm: 31 1/2 (5th)
Vertical: 39 (99th)
Broad jump: 121 (97th)
Bench: 34 (91st)
40-yard: 4.62 (99th)
Short shuttle: 4.25 (97th)
3-cone: 6.87 (100th)