Before I provide any links, I just want to clarify a few things:
Engine Variants: Support for 7-litre and 12-litre rear or mid-mounted engines.
: As of later updates, the specific thread for these 8000-series projects has been marked as paused or closed OMSI-WebDisk Expected Features (Based on 2021 Previews)
Customization: Community versions frequently include "setvars" to toggle features like door brakes or specific regional dashboard layouts. Where to Find Downloads
You might wonder why "2021" is attached to your search query. In the OMSI community, mods are updated constantly. The versions released around 2021 represented a turning point for the Volvo 8700 mod:
What is the Volvo 8700?
A real-life intercity/coach bus (12m or 15m variants), popular in Scandinavia and Europe. In OMSI, it bridges the gap between a citybus and a full touring coach.