Lots of options now in 660cc turbo category. Most of the Japanese Kei Car makers now include a turbo variant option in their line up. Based on my personal experience and knowledge, i would recommend you the following in the same order;
- Suzuki Wagon R Stingray turbo/Mazda AZ Wagon Custom Style XT ( Same car, different badge)
- Nissan Dayz Highway Star G turbo/Mitsubishi EK CUstom turbo (Again, same cars, different badge)
- Honda N-One/Honda N Wagon Custom (Both have turbo variants)
- Suzuki Hustler Turbo/ Mazda Flair (Again, same car)(Costing a bit on the higher side)
These are the best selling and reliable options in Kei car category with turbo variants. All come with 7-speed paddle shifters.
As far as the parts availability is concerned, Kei cars have lots of parts availability now specially in Lahore, karachi, Pindi and Peshawar. But if you wanna play even safer, then i would recommend Suzuki Wagon R stingray Turbo .. Hope i was able to help. If you want further details, you can contact me through my page. Good Luck