If you are looking for premium luxury interior modifications for your Mahindra Thar and you're in India, you can explore the options available at Jeep aftermarket stores or customization shops. These stores specialize in off-road vehicles and can provide a range of premium upgrades and modifications. Here are some suggestions:

1. Upholstery: Upgrade the seats with premium leather upholstery in a color and design of your choice. Look for high-quality leather materials that provide both comfort and luxury. Consider options like diamond stitching or perforated leather for an upscale look.

2. Dashboard and Trim: Replace the stock dashboard and trim with premium materials such as genuine wood, carbon fiber, or brushed aluminum. These materials can give your Thar's interior a luxurious and sophisticated feel.

3. Infotainment System: Install a high-end infotainment system that includes a large touchscreen display, navigation, smartphone integration (Apple CarPlay/Android Auto), premium audio system, and advanced features like voice control or gesture control. Jeep aftermarket stores can offer a range of options to choose from.

4. Ambient Lighting: Enhance the interior ambiance with customizable ambient lighting. Install LED light strips or panels under the seats, along the dashboard, or in the footwell to create a luxurious and visually appealing atmosphere. Jeep aftermarket stores may have specific lighting options designed for the Thar.

5. Steering Wheel: Upgrade the steering wheel to a premium leather-wrapped one with additional features such as audio controls, paddle shifters (if applicable), and heated functionality. Look for custom steering wheels that match your desired style and provide a comfortable grip.

6. Flooring: Replace the stock carpeting with plush, high-quality carpet or opt for premium rubber floor mats that are durable, easy to clean, and offer a luxurious appearance. Jeep aftermarket stores may offer floor mat options designed specifically for the Thar.

7. Comfort and Convenience: Consider adding features like seat heaters and coolers for enhanced comfort during extreme weather conditions. Install ergonomic seat cushions or memory foam inserts for added luxury and support. Explore options for center console organizers, wireless charging pads, or rear-seat entertainment systems for added convenience and entertainment.

8. Soundproofing: Enhance the cabin's insulation and reduce road noise by adding sound-deadening materials to the doors, floor, and roof. This can significantly improve the overall acoustic experience and create a more refined environment. Jeep aftermarket stores may offer soundproofing solutions designed for the Thar.

When considering interior modifications, it's essential to consult with reputable Jeep aftermarket stores or customization shops in India. They can guide you through the available options, provide expert advice, and ensure that the modifications are performed professionally and safely.