Major Integra Service

I was wondering if ordering USA parts for my VTI-R would fit as theirs are GSR BC18C1 instead of B18C2.

Parts such as:
Timing Belt
Water Pump
Tensioner
Tensioner springs

If they were for the GSR Version, would it be able to fit onto the VTI-R version? As far as I know, the Injen CAI for GSR fits VTI-R perfectly but I'm not too sure about the other materials/parts as they're cheaper from the USA than Australia for the same basic shit.

Thanks!

the USDM GSR is the same as our VTI-R

So just to be sure, buying GSR parts such as timing belt etc would be the same as VTI-R?