I'm partial to these. SSR GT3 or otherwise known as SSR GT3 Werfen-
I have 18s, but they do make them in 19. Keep in mind, however, that the pre2005 models were not recommended by Porsche to install 19s. If he does get the 19s, because of the width of the wheel, he'd also have to use a zip tie to tie off the parking brake line from the rear wheel, as if you don't, it will rub against the tire.
My wheels specs:
Fronts 18x8 5-130 ET49
Rears 18x9.5 5-130 ET43
With these specs, no need for spacers...
You can probably find them used at the price range you quoted, or
you can get em new here:
http://www.more-japan.com/SSR_GT3.php