i have searched this but still not 100%, i am going to buy a mini k&n breather in place of the original setup with viper setup too.
i think the ID of the neck should be 18-19mm, is that correct? i cannot get to my car to check this out.
there are a few options on demon tweeks but unsure which will fit?

also anyone know in/out dimensions of the viper ind kit?

demon tweeks mini breather