Absolutely, buy a kit. You can find them on ebay all day long for between 120-160 depending on the seller, and the kit includes the pistons, rings, wrist pins, gaskets, and practically everything you need to complete the top end job minus getting the cylinders bored.
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...&category=43971
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...&category=43977
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...&category=43977
If you do go the ebay route, I've bought two top end kits from sledpartsguy, and they showed up at my door 3-4 days later; very professional guy.
What bore are you on now? I'll be happy to help you get going in the right direction, I've been in your shoes before!