Need help with gearing!

Sup guys! Very new to the site so please bare with me. I got a 2016 extra cab manual transmission 4WD base model. It's lifted 6" with a Fabtech system with billy coilovers and a add-a-leaf plus a block in the rear on Billy 5100's. It sits on 20X12 Moto metal MO967 wheels wrapped in 33X12.5 Fuel gripper MT's. So here's the question. What's the exact R&P size for this truck? I know it hasn't changed in forever but with doing research on so many different sites I can't sit on an accurate answer. This 2.7 needs help pulling these tires and I already know that I want to go with a 4:88 ratio. LowRangeOffRoad tells me that 6 lug trucks w/o a factory e-locker is a 8.4" or 8.25" R&P size. But on the exact same site there's a little side note that says 8.4" or 8.25" is wrong and it's just a 8". Marlin crawler tells me that it's a 8" R&P. 4wheelparts tells me it's 8" R&P. That there already leaves me so lost. Also what to I need for the front? Please help!! Thanks for reading

 

Low low.......

 

Is that a typo?? Did you say you put all that heavy shit on a STOCK 4 CYLINDER DC?

 

https://www.tacomaworld.com/threads/which-models-have-which-size-differential.388610/

 

It's the 8.4 I've been talking to eastcoast gear supply and yukon gear and these trucks came with no locker in the 8.4 and 8 in for locker rear ends. Check east goat gear supply great people and know their shit.they have helped me a lot since I tore the spider gears out of mine