Nothing stopping you putting a truss tube dob, or a solid tube dob, on an EQ mount of an appropriate size, just so long as you have the right mounting plates and brackets to attach it and the right amount of counterbalance weights attached to the mount. The main thing is to match the size of your scope to the mount you want to use. A 16" dob is going to be heavy and even heavier once you stick all the fiddly bits to it. Like EP's, finders/guidescopes, cameras, cables etc etc. So, you're going to need a big mount...one that can carry all the extra baggage as well as your OTA. I would go as far as saying instead of a Titan, you look at an even heavier mount such as a PME or a large Astro-Physics mount (AP1200 or larger). You could also try a mount from these guys...
Parallax Instruments. You can get all the parts you need from them to mount your scope.
If you really wanted to get technical, you can even get fork-type EQ mounts to cradle the scope in, but they would require a bit more to work upon than a normal GEM mount.