if you use a 4x4 plenum cover, you're better off using also a 4x4 fuel rail with it than modifying a 2wd one to fit, as the FPR is fixed to the rail on 4x4 not with a shonky length of hose like on a 2wd.

i did that, but brazed on the quick connect end from a 2wd so that i could still use a 2wd fule supply pipe and remove/refit it easily