The time between driving stock and deadened was too long so not 100% sure on difference, but we drove from Caboolture to Mt Isa and back and had no complaints. I know its alot quieter than our sh forester. I used this stuff aswell...
I've done it on the d21 a few times i put an engine crane through the passenger door opening (i took the door off the last time) then put the chain through the shifter hole wrapped around the box. next time i plan on using a chain block on the engine crane
TD27 Injectors
http://www.ebay.com.au/itm/DIESEL-FUEL-INJECTORS-NISSAN-NAVARA-TD27-/360879898371?pt=AU_Car_Parts_Accessories&hash=item54061e3f03&_uhb=1
Set of reconditioned injectors $69 posted