I have just finished making one of theses for a friend.

The fitting for the FPR is basically another injector bung with a plate that it bolts to, to hold it in position.

Make sure you check the condition of the o ring on the FPR before you use it. the one on the FPR i bought was shot. Easily replaced with an injector one. A fecked one could end up with your car going up in flames.

I wouldn't recomend using a jubilee clip on the o ring part.

If you really get stuck i could make you a fuel rail, but would need to know
where you want the FPR mounted eg end or top.