S14 seatbelts (95-98) work, but you must fabricate or ensure you have the mounting bracket for the main reel, and trim the existing interior panels.
S14 manual seat belts are commonly used as a cheaper alternative for S13 owners, but require trimming existing plastic panels. 240Sx Manual Seat Belt Conversion
The C-pillar interior panel and some mounting points may differ slightly between 89-90 and 91-94 models. S14 seatbelts (95-98) work, but you must fabricate
A cleaner interior, improved reliability, and the ability to replace broken auto-belt components. Necessary Parts Checklist To perform a complete "proper" conversion, you need: A cleaner interior, improved reliability, and the ability
Install the manual A and B pillar plastic trim pieces.
The roof liner often needs to be replaced with one from a manual car to ensure proper fitment of pillars.
The seat belt warning light may remain on for 3-5 minutes, but the car will function normally. Key Tips & Challenges