I switch from sinister diesel because they are garbage and xdp had great customer service. I needed a fuel bowl delete kit and aftermarket fuel pump. I told them I had sinister diesel fuel return kit and what I would need they said between the air dog 5g and xdp fuel bowl delete kit it would have everything i need included. However it does not include a return line from regulator to factory return. They said I would need to buy their kit? Seriously?! They said because it sinister diesel and they use aeromotive and I explained sinister also uses aeromotive just rebranded. They refuse to sell me just their line. So I asked for refund because fuel lab has a full kit from pump to delete that has everything. They told me if return gets damaged during shipping I will not get a full refund. That's their responsibility to put insurance on it. I told them everything I had and what I needed to do and they said everything was included. If they said they could not sell me a return line and that none was included I would never have even ordered it. Simple fix would be to sell me a return line. Or send me a shipping labeled that is insured. It's not my fault. Huge waste of time. Need to find a good diesel aftermarket manufacturer because xdp and sinister diesel has poor design and flaws. Finally they just want to upsell you more parts when all you need is just one part. Delete kit doesn't even have a mounting point they just want you to zip tie stuff. Great design! Go with fuel labs. Anyone else issue your credit card company has warranty they will refund you and take the payment back from the company. Don't fight with xdp call your credit card company and explain the situation.