I'm glad to be apart of the Volvo community and possibly getting some help and tips from you Volvo vets out there

-- Recently I purchased a Volvo S40 1.9T 2000 at auction for around $2000.00USD which I'm thinking was a pretty good deal. This car has only 98k miles on it and is in pretty good standing. I recently replaced the motor mounts, transmission fluid, oil, air filter, and a headlight fuse. The car is working great and I'm fully satisfied.. you could say. I didn't realize that Volvos (prev. I thought to be grandma cars/I'm only 22) had actual pep to them on the road.

My main question now is what are some parts that I could purchase to increase the performance and over all speed. I've looked though fourms and have an idea but i would like to hear from experienced Volvo users, on what you would put on this car.

Budget - ~700-1200USD

Thank you for your time.