Hey man, congrats on the recent purchase! I think you'll find you'll get a lot of car for the money. Now I'll try to answer your questions.
Anything I should know about owning a celica?
The 00-02 GT models with the 1zz engine are known to consume oil. Regularly check your oil level.
You may discover that modding Celicas isn't as cheap as modding a Honda or other import. The aftermarket is small and expensive. Unless you're looking to spend big money or do a major overhaul, stick to the basics: intake, exhaust, short shifter, wheels/tires, etc.
Just keep an eye on that oil level! It'll treat you well if you treat it well!
Last edited by connor2002gt; Jun 25, 2019 12:59pm.