I would really appreciate any advice or facts to my curiosity.

Hey there people im new to this so please dont judge me I have a question and hope to get an answer I just bought a 98 acura cl 2.3 vtec. My question is why is it that everywhere I go for parts all I see are 2.2 or 3.0 and is there any type of upgrades I can make to my car also wondering if the car may have been engine swapped because I dont see any 2.3 versions anywhere or is it a rare version? Sorry for my long question but somebody please helo me because I see potential in my car abd want to know more about it. Thnx