It wouldn't fit, the ETZ stator mounting is different from the TS/ES.
However, there are more companies who make those ignitions fit.
Like this one:
http://turbozabytki.wskturbo.pl/pl/p/Ko ... 0251150/79Again, it is the same GY6, 11 pole alternator. Here they don't even modify it; this company uses a adaptor for the magneto. Unlike the previous link, where they replace the centre part with a taper that fits the MZ. That way with one solid piece is supposedly better than the adaptor way. But I got absolutely no experience with any of those... Certantly an interesting way of making it work.
150W is more than enough. Even without the use of LED's and with a H4 bulb in the front.
Just for comparisson, the new Royal Enfield 650 bikes output 156W. And they have many more electronic components than an old MZ.
Puffs wrote:In fact, if you run LED lights, even a generator capacity of 25W DC or less would easily suffice - and make the bike run 1% faster, giving +/-0.2HP extra to go into the gearbox.
Not quite... A LED bulb for the headlight still uses about 20 - 30 W, add the taillight, break light, indicators and speedo lights and you need a bit of power.