We're building an 07 truck now that will require two pumps.
We tied two pumps together and routed the fuel outlets to a Y. I made the Y with some 3/8" metal tubing.
I looked all over and couldn't find a Y I liked, so making one was much easier and cheaper. There is limited room in the bucket, so an Aeromotive or Russel Y block wasn't a choice.
Here is a pic of the two pumps joined. If you're wondering if the hose will fall off, NO, I tig'd small bumps along the end of the tubing so the clamps and hose has something to grab onto.
For the wiring. We ran a 10g power wire fused to the alternator, then run it through a relay that is triggered by the stock fuel pump relay.
The stock bucket connector was disassembled and the stock 18g wires removed. We put in a some terminals that would accept the 10g wiring, then internally we discarded the stock wiring and installed 12g pairs.
A 10g ground was also ran the same way.
This allowed us to use the stock wiring connectors and drill NO hole in the bucket.
The stock feed line was used, but at the engine compartment an Aeromotive regulator is controlling fuel pressure now.
The stock evap line was used as a return line.
Routing: feed line into regulator, out the regulator, into the stock rails. The bottom port on the regulator goes to the evap line.
Both pumps will be running all the time.
The bucket was heavily modified to accept all this, but everything works just fine.
Truck is a new body w/ iron 5.7L, NP front mount, 80e swap (thanks RED), gonna push about 15psi.
We just did a camaro with the same mods, and fuel pressure was rock solid.
I have no doubt fuel pressure will stay constant, however, volume...
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