One thing I can't stand is some schmo with a near stock engine
driving around with a 5 inch cowl hood.
(Not saying you're a schmo...
)
Unless you need the clearance, I'd say stay around 2 inches... make a statement... with your blower...
__________________
Uncle Sam
"What the hell is up with all the gauges?
Calling Captain Kirk, your ride awaits... Phasers on stun...."