You dont need skins as such, the game already enables you to give custom serial numbers etc.
Here is a picture of a couple of 605 hurris, check the serial number and callsign.
Simply select the squadron as 605 for the UP set the callsign to 15 for the O and the serial to P3107.
If they however had a different paintjob from the generic camo, then sure, gimmi a PM and I will sort you out
