ok so again i have a 2001 ford f150 with a v6

looking to make it stronger and such

soooo

i narrowed it down too:

ECU
cold air intake
something to force out exhaust
and a supercharger

can anybody recomend what i can get for best quality per buck spend

and also

what things are easier to install that maby i could do myself

the supercharger i would deff not do, and the exhaust but maby the intake and ECU?

please help!!!