$attributes = array();
foreach ($product['attribute'] as $attr) {
// тут выбираете какие нужно
// и добавляете в массив $attribures
}
$data['products'][] = array(
// добавляем в массив с товарами
'attributes' => $attributes,
'cart_id' => $product['cart_id'],
'thumb' => $image,
'name' => $product['name'],
'model' => $product['model'],
'option' => $option_data,
'recurring' => $recurring,
'quantity' => $product['quantity'],
'stock' => $product['stock'] ? true : !(!$this->config->get('config_stock_checkout') || $this->config->get('config_stock_warning')),
'reward' => ($product['reward'] ? sprintf($this->language->get('text_points'), $product['reward']) : ''),
'price' => $price,
'total' => $total,
'href' => $this->url->link('product/product', 'product_id=' . $product['product_id'])
);