Smallish, not Navy by any means. BYU will pose some serious matchups for them.

OFFENSE
OL Averages a out 6'-3" and 289
WRs - 2 are tall targets, think Pau'u and Cosper, while their slot is a lot like our Jackson.
QB is good, but untested vs really good and much more physical defenders. Every SEC program would eat this team for breakfast. Pollsters will expect BYU D to do the same.

DEFENSE
DL Averages about 6'-1" and 290
LBs
OLE is 6'-2" and 226
Mike is 6'-0 and 220
Spear is 5'-9" and 210
CB's are 5'-10" and 5'-11" about 177
Safeties are 6'-0" and 195, good speed, not great.
BYU should manhandle them and at 4,770 Ft> Sea Level, wear them out mid 2nd period if the Cougars adopt LaVell's strategy and it passes first to establish the run.