You can buy aftermarket Ford type 1375223 pumps from ebay, they range from £40-£70
I'm not sure what the quality would be, but it is a cheap source of the plastic clips.
There is a lot of chatter on the web on these clips, the following thread link may be of interest;
http://forums.focaljet.com/showthread.php/663922-Leaking-fuel-hose-replacement-and-the-red-clip
