Japanese Models:
XSi -1.6L B16A DOHC Power Everything...(GS-R Package)
RSi -1.6L B16A DOHC Less features (RS or GS).
ZXi -1.6L ZC SOHC luxury package ( LS).
RZi -1.6L ZC SOHC kind of a stripped down LS.
TXi -1.6L ZC SOHC the very basic no frills model.

Thats why I thought that. So I would assume its a basic swap, since JDM ones came with it.