This will do all catch up maintenance. For power, a chip + fuel injector nozzles will give you a lot of power. The clutch may slip so start with a chip and see how you like it. Look thorugh the FAQ section "1000q". There are also suspension writeups, I don't know what kind of ride you would like so call the vendors to ask how the shocks will ride.
Get the bilstein TC shocks and the Audi TT control arm bushings. It will really refresh the suspension. As mentioned above, also get new front strut mounts. It'll handle better than new!
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