Progressive Springs [Part number]

[Manyakus]

I reached out to Progressive Suspension for the part numbers for the progressive springs if we were to rebuild the fronts and rears.
I received this as an info:

Front suspension - progressive spring : 11-1102
Rear shocks - full complete set : 412-4222C

When I asked him if there is a part number for progressive spring for the rear if I was to rebuild the OEM's, they replied they don't have.

Hover on the internet, I see some are using
Rear shock - progressive spring: Kit D - 00-1170

Did anyone use this part number for the rear?
What did you guys order?

I will be rebuilding the fronts and rear OEM.
I want to change the OEM springs to progressive springs.

[Manyakus]

Progressive Suspension confirmed that the part number for the rear is correct.

So this is what I have so far for anyone who is interested:

Front fork Progressive Spring: 11-1102
Rear suspension Progressive Spring: 00-1170
Rear suspension bump stop: Energy Suspension 9.8101G
Rear suspension (replace completely): 412-4222C


For the front, they recommend ATF fluid and 5.5" fluid level from the top.
As for the back, they lost some documentations due to server crash and they do not have this info.
Anyone has what is the fluid level required for the rear's?