Here is some info for the Squash Performance Dual Pumper to fit the newest version of the Zeta platform. This unit houses two of Walbro's latest in-tank uber pumps - the 400LPH turbine. These things are quieter than the older Walbro 255LPH pumps and they are soooo much better in every aspect. We're machining the prototype units this week and we're still looking for another tester. We have a couple in the states lined up (this also fits the 2010+ Camaro) but if someone in Australia is interested please contact me and I'll work something out with you.
We're working on some returnless options that work with the PWM fuel pump controller (FSCM) that comes on these cars as well as fuel system plumbing.
Here is a preproduction CAD render to whet the appetite.