parts crossover to other similar vehicles

Forum: 

I have a 2004 Perodua Kenari 1.0 12 valve cyl VJ/JE engine. I have been told that they are re-badged Daihatsu Moves, and also bulit on the same platform as the Curore and Sirian? If so, will the exhausts be comparable, as the Daihatsu parts seem to be a lot cheaper than Perodua when shopping around for stuff. My Daihatsu Dealer is also the Perodua Dealer, but will not say if so, so they can charge me for dearer parts I suspect. Any body know plz?