The one I'm currently messing with is 1.6.3, yes. The NSM mod has been completely removed from this one.
I've gutted TM and changed some things in all versions of this. It plays more like TM 1.5 but with some more of the goodies in 1.6.2/3 without making sinking more difficult, replacing
part of the IFF setup with black contacts and ship outlines, and other little changes. It's not really TM anymore but uses quite a few parts of it and the related creator's mods.
It's been a bit since I put this one out there. I'll rename it on the next version to keep the confusion down.