Fuel line and fuel line adapters K-jet -> mk4 rail

Ok, so I need to connect the fuel line and return on my Corrado up to the mk4 fuel rail. What connectors/adapters do I need? Can someone confirm that the threads on the a K-jet VW are M12x1.5? Do I just need from the threaded end (hard lines) -> push fit with jubilee/clamp, and then some jubilee clamps onto the end of the mk4 rail? Also, I guess I need high pressure fuel line (Nitrile?) too?

ive used k-jet lines, pulled out the barbed ends then slipped on some braided high pressure fuel hoses which then connects to the 1.8t fuel rail, then jubilee clips on both ends.

Ah right, cool. So I just need some line and some jubilee clips then. Can you get different quality jubilee clips? What I mean by that is can you get ones that grip better than others?

[EDIT] Oh and what internal diameter line do I need, and can anyone recommend an online supplier?

Think Dave rates Speedflow(?) quite highly..

as tomo says, i pulled off the plastic k-jet line and it leavesd a barb fitting, then just used normal injection fuel line