if your bushes are ok the two mods that give the most drastic changes to an ep chassis are
- the anti lift /astor kit,
from whiteline which increases caster (stearing feel) eradicating the vague stearing(the feeling of not knowing how much front grip you have)giving you more confidence with the car
and has anti lift propertys due to the ofset bushes.
think of a primitive type of lsd is the best way i could describe the feeling from this mod helping you cover ground alot faster in greasy and wet road conditions.
most cars come from the factory standard with one so why toyota omited it from the ep is a mistery and is the main reason for the woful understear issues associated with the ep chasis.
its job is to increase roll stifness and resist against weight transference.
you will find yourself taking corners alot faster due to the car rolling less which has a knock on effect of loosing the ellusion of travelling speed
most people waid in with expensive coilovers and chassis braces on recomendation but,
i cannot stress enough how different your car will feel after these mods which will raise your corner and exit speeds by an eye opening amount.
even on standard suspension they make a big difference reducing almost all understear opening up a totaly exploitable chassis
obviusly its a good idea to get your wheels aligned aswell
anyone(very few) that have fitted these two mods to their ep can vouch for what im on about and for £150 for the pair its money well spent