Passionfruit is a goddamn delicious fruit. It is loved all over the world for making juices, jam or just eating the fruit. But I won't waste your time telling you what you already know; you want seeds and I got seeds, so let me tell you how you can best cultivate yours...
Plant the seeds half-an-inch deep in seedling trays, four inches apart. The seeds can take about three weeks to germinate, so be prepared for that. When they reach 10 inches in height, transplant them to a shady area by a trellis on an overcast day. Set them 8-10 feet apart. They will begin to bear fruit in 1-3 years and produce abundantly after that. These 500 seeds could end up producing tens of thousands of dollars of fruit if you're smart about it!
http://www.hort.purdue.edu/newcrop/morton/passionfruit.html is an excellent reference
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