No, there aren't any ROMs for your Prevail 2 or even the original Prevail. The ZTE Warp Sync is a Boost mobile phone with many custom ROMs for several Android versions to choose from. Both phenomx4 and I have made some custom Roms for it so there's many to choose from. In fact, we're also working on more and have more on the way to post after uploading. I'd have to check but I think this device is one of the few devices from Boost Mobile that has the most ROMs here in Android Forums. It is also the 1st ZTE device Officially supported by Team Bliss of Bliss ROMs..
You can check out the ROM selection here:
https://androidforums.com/threads/zte-warp-sync-all-things-root-guide.868108/
The device may no longer be sold in stores but easily found on amazon.com and EBay for about $60. I also realize that this device is a bit older but nearly all new ZTE devices out today have either the same or lesser specs (with newer OS's that can't even be Rooted anyways). You should check it out and hit us up if you like, we'll be happy to help get ya started out.. 😎