OC2 version available here => http://www.opencart.com/index.php?route=extension/extension/info&extension_id=20848

Universal Product Feed allows you to create multiple XML product feeds. You can define desired data structure of final output - set tag names and type of data to be added. Extension contains all common data types + adds abbility to program own logic for shown data. Has option to filter products to those, which are in stock, or have price > 0. Final XML can be cached and its refresh interval can be set in administration. Feed language and currency can be set for every feed separately or it can be set to store default values. Gives possibility to set SEO keyword for created feed.

NEW: Added possibility to filter products to export by manufacturer (use upgrade.php to upgrade database from previous version) - for OpenCart 1.5.2.x and later only!.
NEW: Added possibility fo display special price for default customer group instead of normal price if possible - for OpenCart 1.5.2.x and later only!.
NEW: Added new functionality (use upgrade2.php to upgrade database) - for OpenCart 1.5.2.x and later only!
- text before and after product list
- mark field as CDATA protected - value will be wrapped in CDATA section
- define list of shipping methods with code, price inc. tax and price excl. tax for product price or weight range. Use field Shipping Methods to show in feed. Tags are defined in setting of the field

NEW: Added predefined feed configurations - just select desired service and all necessary settings will be updated to match service requirements automatically. Available services: Google Merchant, Heureka CZ/SK - for OpenCart 1.5.2.x and later only!