Need Help Returning Phone to Stock (ELI5)

I'm trying to return the phone to stock so that I can take an OTA update that I have put off because the phone was running Android Revolution. After returning to stock I may keep it stock for at least some time. At this point, what I know is that I need to flash a stock recovery, a stock ROM and relock the bootloader. But that's about the extent of it. I'm having extreme difficulties locating any stock files for my phone. I think some of my difficulties lie in the fact that my phone is S-ON.

The phone itself is Canadian carrier Rogers branded Running Android Revolution HD 7.0 (Android 4.4.2 Sense 6.0)

(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.16.2133156.UA10G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: (Omitted)
(bootloader) imei: (Omitted)
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B16000
(bootloader) cidnum: ROGER001
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: ab0efa49
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.016s

***Tampered***
***Unlocked***
M8_UL PVT SHIP S-ON
HBOOT-3.16.0.0000
RADIO-1.16.2133156.UA10G
OpenDSP-v38.2.2-00542-M8974.0311
OS-
eMMc-boot 2048MB
Apr 11 2014, 21:08:42.0

Kernel Version
3.4.0-g0c47a10
root@abm022 #1
SMP PREEMPT

Baseband version
1.16.2133156.UA10G_20.18m.4096.04L

Build number
1.54.401.10 CL325784 release-keys

If you need any other information, please let me know. I do not care about data loss or anything like that. I had backed up all important media prior to fiddling with the phone. Any help at all to get me in the right direction would be greatly appreciated. I know there are other threads regarding this same thing, but some of them are over my head and/or contain dead links to stock files. I really need to know what stock file versions I need and how to apply them. Please bear in mind that I am S-ON and I don't really want to pay for sunshine, but will as an absolute last resort.

Thanks for taking the time to read!