Replacing fuel pipes Pre HE

hi Guys, I am now looking at the corrosive nature of Ethanol and the fact that my Pre HE flexible ( not any more! ) fuel pipes are past their best its time to replace them. Can anyone advise what I need please? I realise it will have to be higher specification as its an injection system and I think some of the pipes are 5/16 ID where as other pipes look bigger than that. Also, there are some pipes over the rear IRS. Not sure whether they will need replacing as well.
Finally, I understand there are barbs on the injectors pipes, but does a PreHE have barbs elsewhere on the pipe work? I have been warned not to damage the barbs or else I will get fuel leaks which equals fire risks of course. Thanks in advance as always.