Displaying product upgrade description?

Hi there.
I'm looking at Zencart for a client and have installed the latest version plus demo data.

I can't see how to show a product upgrade with a description.

The idea is that the main product displays with a list of upgrades available for that product. These are not 'attributes' like colour or size, etc., but additional products in their own right.

But only certain of these upgrades are suitable for any given main product, so only the appropriate ones should display on the main product page.

Each upgrade needs a image, a text description long enough (say 80 - 100 characters) to give some technical information about that upgrade, the upgrade price and an add to cart link.

Can Zencart do this as standard?

Thanks for you help.

A standard zencart won't do that - but there are a few cross-sell/upsell mods available in the downloads section that might work for you