Need help ID'ing this slave cylinder

Can someone help with an ID on this clutch slave cylinder ? I got this old hot rod truck I'm building and want to use as many of the original build parts as I can. It has this Wagner/Lockheed cylinder with old Ansen swing pedals and master cylinder. Any suggestions ?

 

See if there is a casting # on the other side.

 

I had a strange slave cylinder on my TBucket - when it went out I took it to a large NAPA dealer and was able to ID it and get me a new rebuilt one in 3 days - it came from Canada.

 

Sorry, forgot to mention. No casting number on it anywhere.