ive not gota standard box actually
ive got the pd160 diesel cupra airbox as it has a 3" maf outlet ect and the 20vt has an ickle 2.5
then ive smoothed the fins inside the airboxfor more airflow and replaced thestandard seat air filter fittament for a green pannel filter (£40 iirc)
as for exhaust what you sugested on anouther thread the miltek non resonated cat back is a great choice but imo id save up a bit more and get the sports 100cell cat aswell as this really does transform the car it revs quicker and goes better to
very costly full system at about £450ish! but a great mod!
the coilovers are harder the lower you go i found that my fk's were much more comfortable and handled alot better too but now im sitting like this VVVVVVV
it is very bumpy and rubs a bit but willl be raising it back up when i finally get my car back!!!