Dude, check out PST, it's a place to order parts for yer camaro. we just finished building my buddies 80 z28, the t top seals are irreplacable. It took him 2 years to find them. it just turned classic so they will come out with a year one thing soon enough.Definately go with the Duplicolor plastic dye. I had to redo many of the interior peices in my '79 Camaro when I restored it (since they don't make reproduction parts yet) and used this on basically my whole interior and none of it has chipped. It stays flexible, so it won't break off like regular paint. Just make sure you clean everything really well (paint thinner works good) so that what you are painting is very clean and you'll be fine.
BTW: You can pick this stuff up locally at most part stores... I even saw it at Wal-mart recently.