Ibishu Diadem ('90 - '93)Diadem was a product of Gavril-Ibishu's partnership through the 90s. The Japanese domestic market was in a dire need of a full-size luxury sedan so Ibishu decided to borrow the shell from Grand Marshal and magic happened.
Ibishu Diadem is a mod based on Grand Marshal. RHD body/interior, custom engines (including a 3.5 from Bolide!), JDM lights, rear independent suspension, and custom badging are the coolest features of this mod but there are a few more! I'll let the screenshots below speak of themselves.
Known Issues:
- Pretty large file size
- Police skin acting weird
- Police lightbar doesn't work as intended
- Rear race brakes are invisible
- Other minor things (let me know if you find any)
Planned:
- Tweaks
- More skins
- More configs
- Fender mirrors (need help)
- Custom interior textures (need help)
- Correct engine models (need help)
- Japanese number plates (ones shown in screenshots aren't mine)
- Other cool stuff (feel free to suggest)
Notes:
- Please do not re-upload without permission
- If you want to assist further development and help to solve bugs/issues - join Ibishu Diadem Development Server on Discord!
- Take in mind this is my first mod so please don't leave bad reviews without any reason and give constructive feedback!
This is my first mod and it wouldn't have happened without the help and resources from others. Below is a list of people that contributed to this project (which is still not over). Let me know if I missed somebody!
Credits:
- Skubert (Original RHD Grand Marshal mod)
- D-Troxx (Grand Marshal rear independent suspension mod)
- Kueso (Some things from WBIMP)
- Robert_CZLP (Skins & Textures & Configs)
- Dark Krieger (Engines & Helping Make Stuff Work)
- Tnormand27 (Badging & Lettering)
- Howler Incorporated (Configs)
- Modding for Dummies Discord community (Answers to my newbie questions and general help)
- Me (Idea & The Rest)

Beta Ibishu Diadem 0.1
Japanese fullsize from the 1990s with American spirit.