The pump appears to be a matching replacement to the OEM, so I'm rating the pump as 5*. However, upon putting everything back together I found that the pump itself was not the problem. Instead the rubber seal for the nipple (upon taking it apart) was apparently the culprit and not permitting the fuel lines to build pressure. Not FPF's problem, but do your customers a favor and at minimum suggest they purchase the seal, or better yet bundle it with the pump (for a few dollars more, you're already right there when replacing the pump).
The filter socks ship with a section of rubber hose to make the splice, but they do not include a barbed splice - why not do so? It's the only way to make the new socks fit correctly. The existing hose line has to be cut in order to remove existing socks, but the full original hose length is needed to properly position the socks in the bottom of the tank.
I would also suggest bundling the cinch rings needed to secure the pump to the housing and the existing hose to the pump.
While not necessary, it might be good to also suggest purchase/replacement of the flat rubber seals for the tank around the electrical and fuel line fittings as well as the rubber o-rings for the tank access plug. My o-rings appeared to be in good shape when I removed the access plug, but a week+ later they had deformed from exposure to fuel and were too large to fit back into the hole.