Only if you know Opencart 1.5 framework and you can start it immediately after the award!
The OC can show many products in a list and use function addToCart with quantity=1 if a product has no options.
If a product has options it redirects you to product/product and you must select options and quantity.
I want to extend the list and show all the products in a style of product/product.
Consider like the [url removed, login to view]
with input quantity and options(if any) for each item without redirect.