Roll up your sleeves....tpl_modules_whats_new.php is the file but mostly only calls /includes/modules/new_products.php and in that file it gets the info for displaying with things like:
Code:
$new_products_query = "select p.products_id,...and
$new_products->fields['products_name'] = zen_get_products_name($new_products->fields['products_id']);
Where you want the model...p.products_model or products_model depending.
I think at first glance that I would copy/clone this with a new name if you only want this for the main page as this is also used for the featured listing - yeah a bit more work but might be what you need