looks great? what upgrades were done to this engine?

 

''Under the hood, Steeda-engineered underdrive pulleys, cold air induction, headers and high flow exhaust raise the performance from the factory 300hp level by a full 15% to 350hp – all naturally aspirated. A supercharged version is in the works (SYQ-SC), and will produce over 400hp Exclusive Calibration through the Ford Technology Transfer Program ''
from the steeda timline

 

By adding the STB was a new hood needed? It looks kinda tall in the photo.