Rear Suspension/ Bars Advice Please

[oli-pug 6 2 Cars]

i've recently made the following changes to my 205:

 

koni adjustable front dampers, eibach springs, grp n top mounts, 309 wishbones and bilstein tarmac rear shocks.

now i need some advice on where to go next, the car is a daily driver atm but will eventually be a weekend toy/ track car so i need to be cost effective in the long run!

 

so...

. rebuilt 205 1.9 or 309 beam

. whiteline rear arb? (does this only fit the 205 beam though)

. torsion bars - uprated for 205 or standard 309??

. group a mounts. which ones?

 

 

thanks in advance

[boldy205 75]

stick a 309 gti beam on it, uprated torsion bars and ARB with more track too.