Hi Reg, they'll all work to spec. The main thing is that you can obtain replacement elements & take a few with you, and to protect your stock pump, you filter the fuel before it hits the stock pump. The problem then is as the pumps are generally push-pumps, some people elect to run a 'lift pump' to push the fuel through your added filter/seperator.

Here's what I did - I think using the Donaldson would work out pretty much the same:
https://plus.google.com/photos/10776...241?banner=pwa