Well, it's in the same spot and the bones of the set are the same (the TMP, TNG, and VGR Engineerings are all the same set, heavily modified), but the actual core is new, and the "swirl" effect is less elaborate.Don't quote me on this, but I believe they did more than try to replicate it. I'm pretty sure the Voyager warp core is literally the Refit warp core.