So far I can say that the customer service at high flow fuel has been awesome to me... They have sent me probably half a dozen different pumps to try, since I swapped fuel tanks and changed setups.

as far as the quality and reliability of those pumps... Well... Let me just tell you that there's a reason why they offer lifetime warranties on all those lumps. Ands GOOD thing they do too... Now if there was a way to get all my time back for having to drop the tanks, that would be something else.

From all the pumps I've tried, the biggest downfall with some of them was poor quality check valve. If you install it yourself and use hose clamps, I'd recommend going back in there a week later to retighten the clamp. A pain? -yes... Necessary? -more than likely.

they sell an e85 capable setup that comes pre-assembled in an OEM bucket for our trucks. I think it's the either got the hfp340 pump in there or that's the part number for the setup. It's already tested to make sure the bucket stays full all the time, which IMO is the biggest obstacle we face in these trucks after modifying anything in the fuel system and start increasing power.

I've found out That 255 pump cannot handle what they claim. Their 340 pump is probably closer to a genuine walbro 255lph. And aftermarket pump in that range with need an aftermarket adjustable FPR