Product URL: click here
Cart Version: Zen Cart 1.3.9, 1.5.x
Product Version: 1.0f
Zen Cart Better Together Centerbox with I Want Both creates a box on the main page that displays your Better Together discounts, with a button next to the offer if the two items are products without attributes; pressing the button adds both items to the cart.
For more information, please visit this product's webpage.