I currently own a 95 Civic Si, when I bought it, it had a full custom red/white vynal interior. Now I want to change it back to stock, can I only use a 92-95 interior? or can I also use a 96-99?

 

for the front seats you would have to swap eg rails onto and the ek seats. The rears wont fit perfect but you can mod it to make it fit. Just search and you will find a lot of threads about it

edit: you can use 94-01 integra interior also without modding.

 

anything is possible with modifications