Fuel system for lsx turbo swap

[bottledbird68]

Bringing this back up rather than start a new thread. 68 is on hold for now until I find time to completely restore the chassis.
However, so I have a toy this season I'm swapping a 5.3 into my 87 bird along with a t56.
Running an eBay gt45 turbo.
Already got 60lb injectors. Pulled the tank from our 95 when we parted is so I have an injected car tank (87 was carbed). It already has a walboro in it. Budget wise am I better off just doubling up the walboros? Only have to buy one pump that way instead of a pump and a boost a pump. I'm open though, just trying to decide the most cost effective route.

Another thing I forgot about, do I get a boost referenced regulator if I don't get the boost a pump? Or just add more pulse width to the injectors as boost comes up to compensate?