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Hi everyone. does anyone have experience with these units ? ( not brand specific ) I have done a few LS swaps. But I've always used a Tanks.INC internal tank pump system. I am considering running external pumps this time around, and these bolt on tank sumps have come up. they are usually provided with a hole-saw. However, Ive only seem them on Diesel applications. From the looks of it, it seems fairly simple, and an easy install. and will ensure there is constant gravity fed-pressure to the pumps.
I haven't installed it yet, but I bought one for my plastic tank (I bought a Hellmann Performance sump, but they do look similar to the XDP). I plan on running a Magnafuel 4301 for a build I'm doing on a 99 Camaro. Everything I've seen said they work pretty good. I chose to go External fuel pump so I don't have to worry about not dropping below 1/4 tank, and all of the double/triple pump setups I've seen you have to remove the bottom of the stock fuel pump bucket. Another option is the sumped fuel tank from NastyPerformance. More expensive, but it's a complete aftermarket fuel tank.
Yea the other concern I have with it, is it doesnt really have a reservoir for fuel splashing. The In tank systems often have a bucket to hold some fuel for hard turns. So this bolt-on bellow tank system might be best combined with a fuel sump. but this now adds another fuel pump into the mix. something to consider.
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Bolt on Fuel Sump 
