1970 Dana 60 Stamping and Model Year Questions

[70_440-6Cuda]

Was doing some reading and came across this site with a lot of great information regarding the Dana 60 as related to e-bodies.  My question is, looking at the stampings on my Dana, the BOM is 603080-3 which is the 4.10 Powr-Loc.  For a car built June of 1970 should it rather be the 603226-4 Trac-Loc?  1 last question, is the gear ratio tag pictured correct for an e-body and are there any reproductions available?  Any other feedback on the numbers shown is appreciated.

https://www.mopar1.us/dana.html

according to the article "During the 1970 model year, the Trac-Lok differential (upper right in Figure 1) replaced the Powr-Lok. Early 1970 model-year passenger cars were still being equipped with Powr-Lok differentials. And, in trucks and vans, the Powr-Lok was not phased out until midway in the 1971 model year."
Bill of Material #s
69-71      E body      3.54       Powr-Lok         603080-1, -2, -4
                       4.10       Powr-Lok         603080-3, -5
                       4.56       Powr-Lok         603080-6, -7
70-72      E body      3.54       Trac-Lok         603226-1, -2
                       4.10       Trac-Lok         603226-4

[moonshine_mike]

Unfortunately I don't really know the exact date of powr-lok to trac-lok switch. Although I can't see your numbers perfectly, it looks like the Dana was stamped in October of 69. I also run a 1970 440-6 with a Dana 60. Earlier  Dana is 603080-1 with a 9 15 9A2 date (Sept 69). I have verified that the internals and the case assembly is 26713X, a Powr-Lok. My ratio tag looks similar to yours (but different ratio) with part of it under the bolt head.

[70_440-6Cuda]

This is probably a dumb question, and I am not home to check my reference manuals, but what is the 2nd tag for?  Anyone know if either of the tags are reproduced?  I did not find anything in my google search so far....

Also, looking for brake line references and who makes the best / most accurate reproductions?

[moonshine_mike]

Mine is:

USE LIMITED
SLIP DIFF.
LUBE ONLY

Brewers sells them.