Kansas's offense is ranked #17 among FBS schools.
Other top 30 units BYU has played:
BAY's special teams (#8 among FBS)
UU's defense (#14 among FBS)
SMU's special teams (#14 among FBS)
SMU's defense (#18 among FBS)
UCF's offense (#16 among FBS)
ASU's offense (#23 among FBS)
OKST's special teams (#24 among FBS)
KSU's offense (#27 among FBS)
BYU's offense will need to put points up on the board, and their defense will need to find a way to slow down Kansas's scorching hot offense that just lit up ISU's #26 defense for 45 points (BYU's defense is #19 FWIW).