Hi Abe, firstly welcome.

I'll be honest i'm not sure about the Delco shocks,but do you have the original ones?
Also is originality an issue?

I'm not sure about Chevy truck parts availability in your part of the world but it might be easier to go to your local car parts dealer and try and match the original shocks with a modern equivalent.
Although someone else might chime in and confirm if the eBay ones are suitable.
Good luck!
Jock

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.