Alright folks, we're up and running. Just as the title says, this is the MK5 Boost/Virgin Mobile 4.3 update in flashable zip. Stock, zipaligned, basic. More to come in the future, but this should be enough to keep you busy for awhile. Enjoy!
PLEASE READ 
I've made a few changes to the wording of the OP, based on my own personal observations from running this build. This ROM is unrooted, even though it has the su and busybox "guts" in the build. Future builds will have all this cleaned up. In the meantime, when flashing, you must flash the SuperSU Update listed in the flashing instructions to regain root. Simple, I know

Just thought I'd let you know! Enjoy.
Thanks:
Google, Samsung, XDA – For obvious reasons
Dsixda – For the Kitchen
@CNexus – Because frankly this couldn’t have been done without your help.
@Chainfire – SuperSU and everything else you do and continue to do. You’re a magician.
@Mr. Struck - for testing deodexed for me.
@TheBritton - For his help getting this shared around the other forums.
Disclaimer: I am not responsible for whatever you do with your phone. Please flash at your own risk!
Download Links:
Stock Odexed
Stock Deodexed
Issues:This is an early run, so I’m sure there might be hiccups. You tell me!
ATTENTION!!!. THIS DOES NOT INCLUDE THE 4.3 FIRMWARE. AKA THE KNOX BOOTLOADER! SO HAVE NO FEAR OF FLASHING THIS BECAUSE OF KNOX!!!