Mount kit would be easy and required, hate cutting out stock mounts and reusing them, would talk to couple of manufactures such as innovate, send them details of the ZS engine bay and have a set of mounts made, not as expensive at you think either, they make various types of compounds for the mounts, as soft/solid as you want.
Compare the shift linkage and make something that fits or just throw in a Ford Focus 5 speed shifter and convert the lot to cable and have done with it, seen this done many times, JJ Cables can make up the shifter cables easily enough, just have the cable shifter mechanism made up.
Radiator is an off the shelf part really, I would use a 3 core half size to allow for room to fit a real nice tubular turbo manifold and decent size turbo.
Wiring, not difficult, break out the schematic of both cars and reverse engineer it, yes, they’ll be a few headaches for sure but nothing expensive just head scratching moments.
Would run it on Hondata or AEM management as there are loads of base maps to get things started, manage the power with boost by gear, which is an onboard component in the ECU, allows you to ramp up the boost in each gear, kind of traction control bit like the AVCR. Set of Evo 550 injectors or RC750’s and an in tank 255 LPH fuel pump. Not sure what size fuel lines the ZS120 runs, so may run a pair of -6 lines.
3” down pipe and whatever size system you want to attach, personally, I would stay at 300hp and run boost by gear as a road car, would lots of fun, reliable and cheap to fix when things do go wrong, with forged internals it has the ability to make 400 to 500hp.
This is a mates car I've been involved with the build, it's built to go fast, very fast, it managed 181 mph on a flooded US Airbase, gear for 217mph, rain did stop play though. This a forged B18 from a Civic 700hp and 500 ft/lbs
This I would love to see in a ZS
http://www.youtube.com/watch?v=7Knbc...1&feature=plcp
http://www.youtube.com/watch?v=2crAa...2&feature=plcp