306 1.8 16v XS- Advice needed

[Midnightclub]

I doubt that turbo would be useable for what you're after being as it's a diesel turbo for starters it'll run out of puff long before you reach the redline..

IMO.. just stick all the GTi top end on the 1.8 bottom end, get some aftermarket management and run a homebrew supercharger setup, much cheaper than a turbo'd GTi setup and it'll scream up the rpms