too hard I'd say to try and get your parents to do some performance part shopping. I would do this:
ask them to go to a book shop/magazine shop and get a few option mags, drift tengoku, GTR magazine, hyper rev etc, whatever you are into.
ask them to go to a hobby shop and buy some nice models, JGTC skyline models are pretty sweet.
and finally ask them to bring back something really japanese.