Sienna (High/Standard Roof) – Exterior & Interior Modification Accessories

Sienna/Granvia High-Roof Conversion – The ultimate way to upgrade your business MPV! I’ve found that a streamlined "mini-high-roof" design—molded using

OEM specifications—is the perfect approach for business-style modifications. Featuring a "Black Knight" glossy exterior paired with a "Deep Sea Blue" luxury interior,

the design avoids clutter while maximizing both sophistication and practicality.

Sienna (High/Standard Roof) – Exterior & Interior Modification Accessories: Exterior (Key High-Roof Considerations)

A custom "Dragon Scale" matrix chrome grille paired with quad-lens matrix headlights instantly elevates the vehicle's presence. Upgraded forged floating wheels

(black centers with silver rims) feature self-leveling center caps (the logo stays upright while turning), balancing aesthetics with safety. A crucial highlight is the

high-roof construction: it utilizes a one-piece stamped design with seamless welding—avoiding the common issues of glued-on, pieced-together roofs—which

eliminates leaks and rattling noises. The lines flow smoothly without looking awkward, and the total vehicle height stays under 2.1 meters,

ensuring easy access to underground parking garages. Finished in piano-black paint, the vehicle exudes a business-class aura that rivals MPVs costing over a

million yuan.

Sienna (High/Standard Roof) – Exterior & Interior Modification Accessories: Interior (Exclusive High-Roof Upgrades)

The cabin is fully upholstered in a dual-tone combination of Deep Sea Blue Nappa leather and black suede, completely eliminating the cheap plastic feel

of the original interior. The steering wheel is upgraded with carbon fiber and genuine leather, featuring a tri-color centering mark and excellent grip.

Middle-row captain's chairs come standard with ventilation, heating, and 8-point massage functions; controls include a rotating touchscreen,

voice commands, and physical buttons, plus electric leg rests and backrest adjustments. The best part of the high-roof design is the headroom:

a custom-shaped starlight headliner features a blue transparent inlay, "starry sky" lighting, and dynamic flowing ambient lights, creating a truly

immersive atmosphere. The flooring uses wear-resistant, easy-to-clean aluminum with a black-and-white marble pattern—far more practical for

business use than real wood. Carbon fiber accents throughout the cabin instantly elevate the sense of luxury. High-roof Toyota Sienna: Interior

and exterior modification details (where quality truly counts).

Seamless welding is a must, complemented by a 360-degree surround-view system, paint protection film (PPF), window tinting, and upgraded

soundproofing and audio; the rear cabin even features a large HD entertainment screen! Rose gold plating and carbon-fiber-style finishes

for the exterior black plastic trim have also been applied. Even out-of-sight areas like cup holders and storage compartments are fully wrapped in

suede—the build quality is truly impressive. Converting to a high roof involves far more than just adding height; craftsmanship and attention to

detail are the keys to a successful, trouble-free build.

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