These are the steps I'd try or have tried since I've also had problems matching Schlong meshes and textures when I switched to SAM Light, but I'm neither an expert in modding nor familiar with the inner workings of SAM, so if they don't work or someone else with more experience is able to direct you better disregard this and listen to them. You either need to select the texture set you use, rename them and drop them in the correct folder replacing the SOS textures, or change te texture path in the CK. I see this mod doesn't have schlong textures while the other mod uses the SAM Full (which only works on LE) approach to textures, which gives the schlong textures a different path from the textures used by SOS and so would be ignored by this mod's SOS addons.

If the problem is the texture you need to restore the textures of the other mod if they have been overwritten, and then check inside the CK if the Texture Addon points to the correct path. They probably come with one or another SAM mod on this site, I just don't remember which, sorry. dds as the rest of the body, since I went through the process I've described recently. On the other hand, I distinctly remember having beast textures with the Schlong integrated on the same. EDIT: I had a doubt so I downloaded the Addon again and it doesn't look like that mod has body textures for the beast races. Sometimes textures are tailored to a specific mesh and switching either just doesn't work. In that case, if Polys are more important than textures, you could consider switching to SAM Light Texture addon (I don't play Argonians so I don't know how different the two texture sets are), and changing the genital texture path in the Creation Kit to the regular body textures.

I did this recently when switching from another body to SAM, but I've had several issues with textures not beding correctly around the mesh and creating an awful mess. If the problem is the mesh you could try taking the schlong mesh from High Poly Body, remove the body, change the slot to 52 and replace the mesh. Low poly mesh or low definition textures?

Schlongs of skyrim for females