Hey man,
With both the afm and the injectors, and then if you get yourself a tune as well, you can EASILY push 300rwks safe.
The standard afm in the rb25's can take 200-210rwks. (im kinda new on the scene as well, thats what i was told by someone with a bit of experience)
Ill PM you a price, but its $20 for the postage to Sydney,
Cheers,
Patrick