FACTBOX-Opel's production sites and staff

Nov 25 (Reuters) - General Motors [GM.UL] is presenting a revamp plan to Opel labour leaders on Wednesday, after deciding earlier this month to keep the European unit instead of selling a majority stake to a Russian-backed group led by Canadian parts maker Magna (MGa.TO). [ID:nGEE5AO0PJ]

Below is a summary of the main GM sites in Europe:

* GERMANY

RUESSELSHEIM: 15,600 employees assembled 120,000 vehicles last year at Opel's headquarters. The factory builds the Vectra and Signum models as well as the new Insignia. The site also houses a technical centre that carries out research and development for the GM group.

BOCHUM: 5,200 workers produced close to 200,000 Astra compacts and Astra-based Zafira vans last year. Under the original Magna plan, some 2,200 jobs were at risk, according to politicians.

EISENACH: 1,800 workers assembled 157,000 three-door Corsa subcompacts at the plant inaugurated in 1992 as a landmark project to revive eastern Germany's industrial structure.

KAISERSLAUTERN: 3,500 employees manufacture four-cylinder petrol and diesel engines and components. Close to 150,000 engines were built there last year.

GM has around 25,100 employees in total in Germany.