Falcons coach Bob Milloy said Mustipher, who is 6-foot-4, 285 pounds, will fit in fine with the Irish because of his mix of intelligence and athleticism.
"He's extremely smart," Milloy said. "As far as understanding what to do, the blocking schemes and all that, it's going to take him about an hour. He'll figure is all out."
Milloy added Mustipher "is not huge by Notre Dame standards," but said Mustipher moves his feet well, explodes at the snap of the ball and has the ability to get down the field and block on the second level.
"He's just good. He gets after you," Milloy said. "He hustles to the other side of the field. When the ball is on the other side of the field, he hustles out there to try and pick off a safety. He's just a very good high school football player, and we play against some pretty good players."
Mustipher will play left tackle for the Falcons in the fall, but he will head to Notre Dame to play guard.
Howeever, if need be, Mustipher said he will play center for the Irish.
"He's a wonderful young," Milloy said. "He's 6-4, 285 (pounds), but he also has a 4.9 GPA out of a 4.0. He is really a true student athlete. He's a great player and he's going to a great school, too."
Good Counsel is one of the premier programs in the nation, and it plays a nice mix of strong national programs as well as in a tough conference in Maryland. And while that should help slightly with the adjustment to college, but it will take time for Mustipher to make the transition.
"It's still a huge step," Milloy said. "I don't care if you go to Allentown State. High school to college is still a huge step. But he'll adjust fine."