Hi, I have just gone through this process for my 4.8 lit and have only been able to achieve 3300kg on the wagon as this is the max that the Qld transport will permit. If you allready have 3465 you are doing well. I have been able to establish that leaf springs appear to have higher GVM rating but my belief is that it is still around 3300kg.
There is another option that will give you about 3800kg but very expensive, the use of pods, they are from a Victorian company ata cost of about $26,000 these also provide a 4 inch lift.
If you are near Brisbane you can chat to a company called ASB Engineering here is the link ..... ASB engineering services modification plate and engineering services, 4/10 maiella st Stapylton, Stapylton (2020)
I think you are a bit optimistic with 3465kg but please let me know how you go. Regards John

 

There is another option that will give you about 3800kg but very expensive, the use of pods, they are from a Victorian company ata cost of about $26,000 these also provide a 4 inch lift.

Not pods... Portal axles... 3780kg GVM

Nissan Patrol / Safari GU / Y61 Portal Axles

Nissan Patrol heavy duty portal axles are now equipped with LandCruiser brake upgrade and RCV Performance CV's & axles

www.marks4wd.com

 

If your in QLD and near the sunshine coast, call Jo from custom vehicle services. He used to be able to get you to 3550gvm. Not sure if the rules have changed but he helped with mine. You can even do the work yourself and then get him to certify it if you use the components he's had tested.
Cheers
Trev

Sent from my SM-G965F using Tapatalk

 

Pedders have been advertising upgrades. Know nothing about them. Just info, in Qld.

 

Only to suit the 3.0l. That's all they got ADR approval for. There's a reason but I can't remember what it is.