I'd like to see an additional tab in inventory, similar to upsell, but seperate.in my line of business cross reference happens frequently.which is different than upseell as in that there is not necessarily an upsell involved.just a similar part of different brand or manufacture.for example; I have two different spark plugs, one from vendor:acme with part number 1234, and one from vendor: stens with part number 987654, both of the same price potentially. One is oem and the other aftermarket. And while I'm at it, an additional tab for related products; such as suggesting a particular air filter when a certain oil filter is selected.again different from upsell and cross reference