I was running the Ford Racing Heavy Duty clutch with my combo and it held up great as a daily driver for about 45K miles.. I just recently put in the King Cobra and suspect it will hold up as good as the previous clutch. Below is a list of Engine and Drivetrain mods....
BBK 65mm Throttle Body
Ford Racing GT 40 Upper/Lower Intake
Ford Racing 1.7 Roller Rockers
180 Degree Thermostat
Ford Racing Waterpump
2 Core Aluminum Radiator by Superior Radiators
MSD 6AL Ignition
MSD Ignition/Boost Retard
MSD Blaster Coil
Vortech B-Trim Supercharger 6-8lbs of boost
Aeromotive Adjustable Fuel Pressure Regulator
Vortech FMU 12:1
Ford Racing King Cobra Clutch
Ford Racing Aluminum Draft Shaft
MAC Shorty Equal Length Headers
MAC Pro Chamber Pipe
Flowmaster American Thunder Stainless System 2 1/2"
10th Anniversary Cobra Brake Calipers and matching rear calipers with SS brake lines
Power Slot Rotors 13” front and 11” back (slotted)
Ford Racing 31 Spline Axles
Powertrax Traction Differential (benefits of a locker and limited slip)
Ford Racing Aluminum Axle Girdle
Ford Racing 3:73 Gears