You can buy the rotors/pad/calipers from a parts store, but you'll be missing the backing plates and parking brake drum. I bought mine from this guy, and everything worked out well: http://www.ebay.com/itm/98-02-Camaro...item48416d1805
Offer him around $150, that's what I did. You'll still need to come up with your own parking brake cable solution. Here's what I was able to do with the LS style cables and our stock cables.: https://www.thirdgen.org/forums/brak...-ls1-swap.html
The extra inch won't make much difference and you probably won't notice.