here it is my simson s50 b2 completely transformed and basically a s51 now.. I'll answer any question! Been building it for quite some time now and im not done yet. :
Category:Simson S50 - Wikimedia Commons
Simson S50 B in Senfgelb | Simson, Simson s50, Simson awo
Simson S50 B2 by dergelberitter on DeviantArt
En Venta: Simson S50 B1 (1977) ofrecido por 3.200 EUR
Simson s50-B2 zarejestrowany po renowacji unikat Ostroróg - Sprzedajemy.pl
Pazoma Motorbike Steel Green Orange Gas Tank Motorcycle Fuel Tank For Simson S50 S51 S70 - Fuel Supply - AliExpress