As to costs I ran around with the calculator the other day for someone else interested in suspension options who asked what the cost was:

At todays RRP but EXCLUDING
* shipping
* exchange rate differences
* engine mounts
* wheels & tires
* brake lines & M/c & booster, etc
* driveshaft. etc.


The cost for the front setup:
Suspension, Steering US $4,973
Plus front Brakes US $3,278
Plus custom engineering & Misc AU $2,880
LESS Core Charges ($575)
Total Front circa ~$10,556

Rear setup:
4-link US $4,000
Dana 60 (custom-specific build) including brakes $US 6,000
Total rear circa ~ $10,000

Of course, this excludes the cost of mistakes & changes to your plans en-route, which added cost significant cost to mine. The shipping costs from US to Australia are also substantial. Front brake setup is custom on my application and this added significant cost.