well, those zenders are only add on kits to the
car. i haven't seen any rear wheel drive zenders rocco's
ever. too bad, with those HUGE ASS wheels in the back,
it would be madness. that smashed rocco at waterfest
wasn't a zender though, that one is a reiger wide. there's a couple of different zender kits, the z400 was they're version of the wide body.
WRT the syncho system, i think a passat one can be adapted with not that much effort. you'll have to cut a track in the floor to run the diff, and custom route the exhaust that's for sure...
if you got the bread, import a rallye golf. i saw some guy
once in ottawa who imported a a real rallye golf from the UK. the only thing is that you can't ship the car fully intact for some reason (he told me, but i forgot), so he had to dismantle it in the UK and send it by pieces. maybe that's a lil' too crazy...