Prodrive springs or better anti roll bars
 

I've got a 2002 WRX wagon, I've already installed an ALK and alloy droplinks which will improve handling more prodrive springs or better anti roll bars?

22 mm roll bars and a Power Station alignment.

Both would be nice.

Graham.

Had a rear ARB and droplinks done at Powerstaion about 8 weeks ago and this made a big difference.
last week i have had springs, ALK and geometry (again at Powerstation) and these made a massive difference - its a completey different car
so if you can, get the lot done.
I suspect though the biggest single improvement was the new geometry settings
remember if you go for springs you will need geometry done aswell anyway
ARB you could fit yourself - after watching Powerstation it is a straight forward swap providing you can easily get under the car with springs compressed.

IMHO neither can give you very good balance with the factory struts. If you add only springs it will be better on bad road surfaces but if you want it for tracks and very good roads anti roll bars will give you confidence.
If you add both don't expect your struts to live for long which will happen sooner or later even with only springs or only antiroll bars.
I am against big anti roll bars for road use although I have one Whiteline rear in my WRX for more oversteer, if you can avoid them and buy better struts or full suspension/coilovers.

can some one recomend some anti roll bars and where to get them form?

Hello. Have a look at the second post in this thread; the advert at the top of the section and every other thread within it. :)

Whiteline Antiroll Bars.
Whiteline Antiroll Bar Links.
Whiteline Anti Lift Kit.

if i just change the anti roll bars will i have to get the wheel alignment checked?

no changing the ARB's won't knock the geometry out. It may be worthwhile getting it checked unless you already know it's sorted. Geometry makes a world of a difference as I'm finding out.