OME TP04 TRIM PACKER?

So I am setting up my OME kit from wheelers and will be getting the 885x with the 90021 NC Sports, 60091 NC Sport Rears, and 3 Leaf Progressives w/ overload for a 2" AAL rear.

I understand that the 95PF5 TRIM PACKER is used to correct the "taco lean" in the front and is for the drivers side on the front shocks. But wouldn't the front trim packer help out correct the rear lean? and does this trim packer (TP04) come in the OME kits aswell? I know it's only about $8, but I don't want to buy extra things, if I won't be using it. sorry if it's a stupid question, I couldn't find about it on the search and it gave me answers to the front trim packer (95PFS).

Not sure if this'll help but my stock measurements are
HUB TO FENDER
FRONT DRIVER 20 3/8
FRONT PASSENGER 20 11/16
REAR DRIVER 21 1/2
REAR PASSENGER 21 3/4


Link to rear TP04 rear trim packer

 

The TP04 is not included with the OME kit. It usually is not needed. But, from time to time someone will have a bit of lean in the rear that does require the use of the TP04 to help correct it.