parts search

HI, Plug!
Just wondering if you managed to resolve your problem with the starter.
I have a 1982 KZ440-C3 (Frame Nr KZ440C-005830) and it doesn´t have a starter too.
I´ve been looking allover the internet for a replacement but several issues come up relating to the starters compatibility... I cant seem to find one that is exactly the same as mine: MITSUBA SM-8203; 12v 0,6kw.
So... because I cant fine one exactly like mine and because a new one from Japan costs more than the bike itself here in Portugal!... I start looking for compatibles.
Do you have a list of models that share the same starter? Does anyone have it?
I already understand the early models have 2 brushes and the later have 4, but will they fit in the same place? I need to be sure to make a buy through the internet... Returns are difficult since I sit in Portugal
I´m getting a bit desperate... I want to start rebuilding my KZ but will not until I'm sure I can get the starter for a reasonable price.

So.. can Anyone help me ?!?
I would me most grateful .
Diogo