I have buy a Edelbrock pump, its a walbro 255 in the box but its not installed yet so I can't tell you much about it.All I know it come with the pigtail adapter and strainer.
I recommend you to buy it from a reputable store because they sale a lots of fake walbro on ebay.
http://www.summitracing.com/parts/edl-3581/overview/