I bought one of these: http://www.modelermagic.com/?p=40546
I don´t know about its availability. The site shows a release in 2012. As it is very pricey and back then the producer told me sales were not going well (I think I received the first kit he sold). Maybe he still has some kits to sell.
To be honest though, the castings leave a LOT to be desired. Lots of distorted shapes (engines are not really round), flash, signs of misaligned molds, a wonky head section, ... The main fuselage basic shape seems to have been printed with a very low resolution 3D printer, and little effort was made to erase printing textures. The whole kit seems extremely rushed. I started 'repairs' but realized I´ll have to do quite some scratchbuilding to achieve a finish I´ll be happy with and set it aside. The photos don´t do it justice, but in a negative way. Once I´ll find the time, I want to give it a proper treatment though. I think with lots of work it can make an awesome display piece.
The Alfred Wong one is pretty great. He doesn't try to make his kits 100% faithful to the originals -0 but they always "look the part". and with so many variations on the Y-wing who's to say his version does not exist "somewhere" in the universe . He had it at Jerseyfest a few years ago when he first patterned it... I almost bought it... I did not have the extra cash... I obviously came to the event unprepared ... Or was that the 1/32 scale one??? both are very nice.
I just checked his site though looks like the 1/48 is sold out.