OFAM (MS2) can run either high or low impedance injectors, those Deka IV's in your link are a good injector for the money and I use them in a lot of builds.
They will flow for about 300bhp in a CVH and around 370bhp in a Zetec turbo, so for a ZVH which has a poor BSFC like a CVH I imagine they will do somewhere nearer the CVH figure.