I have some products which should be sent specifically by a courier company.

Is there already a mod that allows us to pick which items ship via Fedex and which items ship via UPS?

And in the event that :

item1-> to be shipped using UPS
item2-> to be shipped using Fedex

are both being checkout, they will be shipped using their respective designated courier company.

I know some PHP, is there any module I can make as foundation for this add-on build?

TIA