easy to do, but make sure you dont cross thread them when screwing them back up again. 5 minutes it will take.
get a haynes manual too it has step by step guide
powerflow custom built me a stainless steel backbox for my old car, an escort for £200 fitted. Asked me how loud i wanted it on a scale of 1 - 10, i went for a 7 :D :D
i guess it will need an intercooler, its just like a turbo , except from the crank instead of exhaust gas's. Can put in bottom of front bumper, like most do.
but 100% upgrade the brakes or your dead with all that power and no stopping power.
exactly as others said, new air filter, then remap.
if you want to do more you can de-cat it, and remove the DPF, then remap it again.
If u want to go mental, bigger turbo, bigger intercooler. Then remap again to get the most out of it!
you need to fabricate your own bonnet release catch to somewhere else, usualy back inside the car, like normal car, im looking to do the same on my focus