GTM do a s/c kit for the HR car.
A member recently had one fitted and mapped by Abbey Motorsport, so I would suggest giving Mark at Abbey a ring.
You can't get all that much power out of a Zed over stock without going the FI route.
If you get a DE and spend money on plenum spacer, HFC's, Exhaust, remap then you would only be just around the power level of a HR engined car.
The HR engine doesnt require a plenum spacer. the rest of the kit fits Zeds across the range.