I missed the top post on my phone ( fuck off Tom )
Back in the day we only had the 205 V3 or V4 STI or the gen 2 GTB motor, before that was RS Liberty. You could get these to go hard with a tune or standard they were quite good. Most never played with the turbo until the V 7 STI came about vf34.

I put a 50 on What ever you do to your car Toms stock V3 libert blows your doors off.

The issue you have is its all old, cool but old.

I question some one saying the autronics is clunky, it's out dated to a moden ECU. But again many cars have them and they have no issues ASG tune them and get good results.

Look for a turbo that bolts straight up