Just go with a Toyota right from the start. You won't enjoy the parts for the Nismo nearly as much as for a Toyota. There are some parts available for Nissans like from Calmini, but not nearly as good a selection as for a Toyota. I have been down this road before myself, I owned a Mazda because it was the "cheap" alternative and the parts I could find were Not at all cheap. If I had just bought a Yota from the start I would have been much more satisfied in the long run.
