Toroidy.pl? Wind-your-own option, basically.
Transformers are perfectly symmetrical, so if you can find a 120:16V transformer, just run it backwards and you're done.
You may find it's, well, lighter or more compact, certainly; most likely better, but probably not easier, to do it with multiple DC-DC stages (wired in parallel, phase interleaved for lower ripple), to make a high voltage rail, then inverter-ize that for AC output. Here's an example:
Left: 12 to 170V converter (about 1A max output) and 12:12 DC-DC (for isolation); middle board: PWM controller; right: mains generator (controller, including current limiting, drivers and inverter); breadboard: filter chokes; other bits of wire and outlet: AC output going to the lamp illuminating the scene, actually (~50W load).
A 170VA transformer is sized about the same as the whole assembly, just for this poorly built prototype. The real downside is, unless you're doing this for the academic exercise (as I did), you're better off buying one. This is a $40 value, at best. And it doesn't even have a shiny extruded aluminum housing!
Given that 2kVA inverters range from laughably shitty to actually-good, eh, you might not find one that's actually 2kVA and a reasonable price (say circa $300?), but if you need one, it's a far, far better deal than anything you can make (sadly!).
Tim