Couple quick questions about modifications/ part interchangeability.

Just bought a Subaru, my first one, 2002 Impreza TS wagon.

I'm looking at a lot of different parts that I'm planning on buying this coming year - exhaust, wheels, tires, springs, struts, etc.

My main point is that a lot of the suspension parts (springs; sway bars; struts) I can find online specify the WRX. I *assume* that they'll bolt up the same way, and that the TS isn't listed only due to the fact that it had smaller/ softer components from the factory. I get that my exhaust is smaller, but I imagine that other parts will fit just fine? What will fit all models? What won't?

Let me know what you know, thanks in advance.