I've shipped and received springs before. All you need to do is tape the heck out of the together and they'll ship. But now, you haven't said anything about the condition. These will need rearching.
I got a pair of 002-003 super stock springs , I bought from Jim Hale , laying under the bench, also have a pair of stock rear shackles , and might have the front hangars , but haven`t seen them in a while . shipping would probly be very hi tho .
tieing them together would be pretty heavy for most of the shippers out there to handle , why wrap them in cardboard , aint likely to get hurt in any way .