hi guys and girls sorry i did put this n generaldiscussion as i saw a few do it but then realised it should be here so can you help

i want to av a lot of work done on my car and i know there are a lot of people her with a lot of technical knowledge and i really hope you can help me

im after doing engine mods for my 2.0l si mondeo

THROTTLE BODIES

1) is it possible to do this and still pass an M.O.T

2) if yes to above what do i get and where do i have them fitted (reputable companies)

CAM KIT UPGRADE

1) what is the best kit to go for also with this combined with throttle bodies will it pass an M.O.T

2) if yes to above where do i get this done (reputable companies)

ENGINE MANAGEMENT UPGRADE

1) do i get an aftermarket ecu to go with the two options above and have that chipped and remapped if so what ones and where to have it fitted

2) do i keep standard ecu and have that chipped and remapped if so which chip and where to get it done

ENGINE COMPONENTS

1)if all 3 of the above can be done and still pass M.O.T would i need to change pistons,drive shafts,fly wheel,clutch etc if so which ones and where do i go for the best results

thanks any help would be really appreciated