Number two has clutch material bits in it, so on that ONE single point I would go with the other trans.
Looks like both have a double wrap rear band (holds better than the single).
You can air test the reverse servo to make sure it applies solidly using the fluid port next to the accumulator if you pull the valve body off.
It looks like both also have a possibly functioning TP lever, but you don't know for sure by that.
I can tell you that most shift kits worth their salt have a replacement separator plate between the two aluminum halves of the valve body that is a different color (like gold) and do not have numbers cut in them like both of yours.
Problem is, a lot of the shift kits direct you to drill out the plate instead of replacing it, so you can't really tell by that either unless you split the valve body and measure the corresponding holes to see if they are stock or have been drilled.
Also the shift kits sometimes have a colored pressure regulator spring and stock is plain metal colored.
No biggie, you can do it.
Here's the air check ports for each clutch and band apply to test it.
Hit any other ports than the red ones may result in fluid in the face. :D
I see AAR posted some of this already, but hope it helps.
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