This is the respond I got from DeatschWerks.
Bent,
Thank you for contacting us. As far as the pump fitting the 9-5 goes, I cannot guarantee fitment 100% but you’re right as far as the universal kit being your best option. It would still be a good idea to compare your pump to the dimensions in the line drawing in the link below.
http://www.deatschwerks.com/resources/f ... -pump-tech
As for the thread you sent me, our pumps are 100% E85 compatible and unless walbro has made some big changes to their 255 pumps they are not E85 compatible. Ours are NOT copies of the walbros. Our internal design is completely different, we use a composite turbine style impeller which is why they run so quietly and also maintain better flow at higher pressures compared to the walbros. When it comes to our warranty, it is a true 3-year no-fault warranty. If you’re having an issue or even suspect that something is wrong just CONTACT US (because it’s impossible for us to know there’s a problem if you don’t) and we’ll do our best to remedy the situation as quickly as possible. In most cases we will ship a new pump before we even receive the old one (this is usually just here in the states because it logistically works better that way) and for international customers we usually have a DW authorized dealer in your area that can exchange it for you if necessary. In most cases the warranty claims we get in end up not being an issue with our product at all and of the ones that are actually product failures most of those by far are caused by improper installation or poor fuel system maintenance. If a fuel tank is full of debris and it can clog a fuel sock and choke a pump out (regardless of brand) and ruin it pretty quickly. Some competitor warranties do seem to be useless if you go read the fine print but that is not the case with ours. Lastly, all the seals we use are made of high quality Viton.
My apologies for the rant.
Thank you
James