angelus2141x

Hey all,
           So I've had a 650D for years now and I just love the case, size airflow, etc and dont want to part with it however, I've just upgraded to a MSI z490-a pro with a 10700KF and the new Mobo has a header for front panel USBC but if you know the case you know it comes with 2x USB 3.0 Headphone and mic jack, 2x USB and a firewire (never guna use that). So im planning to try a little upgrade for the old gal. The mobo has 2x usb 3.0 internal headers and I managed to get a front panel for 650D ofd ebay so going to take the USB 3.0 out of that and the 2xUSB out of mine and swap them for four front panel USB 3.0 to two internal headers, no i have no idea what use it is but I like the upgrade. Then im going to remove firewire connector (did anyone use that) and put hopefully 2xUSBC in there however what im struggling to find or find out, is there a 2xusb-c to single internal header (usb-e I think its called) like the 2xusb 3.0 to one internal header. 
 
Also if no product like that exists at the moment, could I buy 2x single usb-c to usb-e internal adapter (Lian-Li do one) and splice the 2x usb-c to a single internal header (I know how to solder wires) or would that just not work?
 
Thanks in advance.