A Planted Technology seat bracket for the Mitsubishi 3000GT, 1991 to 1999. Part number SB357.
In Japan this car is the GTO, and it was also sold as the Dodge Stealth. Three badges, one car. If you have a Stealth or an imported GTO, send us the chassis number and we will confirm.
It is one of the most complicated cars of its era
The VR-4 has four wheel drive, four wheel steering, active aerodynamics and electronically controlled suspension, all in 1991. That complexity is why they were cheap for two decades and why the good ones are now appreciating: the survivors are the ones somebody kept on top of.
Weight is the honest problem
A VR-4 is around 1,700kg, which is a great deal for a two door coupe. Nobody is fitting a shell to save weight, and it would barely register. What changes is that you stop sliding about, which in a heavy car with this much grip happens sooner than you would expect.
Practical
Thirty years old and imported in most cases. Get the carpet up and look at the metal round the mounting points before you spend.
Have you written anything about this exact product?
Yes, we have covered this exact product: Lexus Planted Technology Frames Updated For 2026, and Customer Car: Subaru Impreza With Corbeau RRS Seats and Planted Technology Brackets. That is first-hand coverage from our own builds and showroom, not brochure copy.
Will this fit my car?
This frame is made for the Mitsubishi 3000GT (1991-1999). Chassis code and years matter more than the badge, as floor pans change between generations, so if your car sits near a changeover year, send us the registration and we will confirm before you order.
Which seats does it take?
Check the bolt pattern in the specification against your seat. The Compatible seats tab above lists what bolts straight on. If your seat is not listed, tell us what you run and we will confirm the fit.
Do I keep fore-and-aft adjustment?
Only with a sliding runner between the frame and the seat, which is a separate part on Planted frames. If more than one person drives the car, budget for the runner. Our guide to sliding runners explains the options and widths.
Is this for the driver or passenger side?
Both sides are available on this listing, pick driver or passenger side at the point of order (sides listed are for right-hand-drive cars). Left-hand-drive car? Ask us, as the sides swap over and availability varies by model.