Tails, that kit will only work with the cable operated throttle body and will not work with the FBW throttle body. It also involves purchase of a new alternator making the relocation a bit expensive.
For those with FBW engines and the standard holden alternator can relocate the standard alternator to the top of the LH head just like the corvette engines.
Here is the kit.
http://www.kwikperf.com/
Not as nice as the kit you showed but gets the job done. If you use fuel rail covers the agricultural look sorta disappears.
Actually, once you have the bolt pattern from the front of the left hand head you can make a set yourself rather than spend money.
Uncle Mike could make this kit easy.