Right i need a little help,

I have a 280+ 4x4 cossie at the mo, i am looking to upgrade to Stage 3 what do i need ? and idea of prices and so on.
I am going to run a T3 for now but will go for a T34 or bigger if poss.

Also im looking a set of springs and shocks (2nd hand) with a 25-35mm drop if you can help let me know.. Koni or something like that...

Thanks

Lee