[Mr70]

Technically no one reproduces the R79 or R79W battery today,and they never have.
Delco never gave permission to license them.But they did give permission to license the later issued R89W,which is what they sell you today with an incorrect R79W decal on it.
Here's a few photos.Notice the varying case & top differences.
The first is todays reproduction R89W they sell with aftermkt. R79W decal with both 3/8" terminals.
The second was my OTC NOS R79 (not W) with smooth rubber top & 3/8" + and 5/16" - terminals.
The third was my later issued OTC NOS R89W with grained plastic top with both 3/8" terminals.
The 4th is Dennis Cumbys original assembly line R79W w/ 3/8" + & 5/16" - terminals that came on his LS-6 Chevelle.