Directly from Hellion's website:
99-01 Alternator #YR3210346AA
Alternator Bracket #XR3Z-10153-AB
99-01 Cobra Intake (Lower) #YR3Z9424BA (Upper) #XR3Z9424AA
99-01 Serpentine Belt #4060980 ^ 6PK2490
99-01 Throttle Cable Bracket & Cable Bracket # XR3Z9728CA Cable #1R3Z9A758CA
Alternator Wires to extend . pigtail #1U2Z14S411UA
*If keeping EGR is desired, need 99-01 EGR tube # XR3Z9D477DB
This doesn't include the turbo kit itself or the k-member and suspension parts you might need depending on the kit you buy. Also fuel upgrades to support the power.