1.Yes, it's manual.
2.There is a possibility.
3.Normal gas is not recommended and knocking becomes audible only under load; either when flooring the pedal or when trying to accelerate from a low gear.
4.Engine, Brakes, Tranny : none at all. Suspension: probably, since there's a mild squeak produced on road depressions and bumps.
5.Most parts would. However, there are certainly parts not shared by the local swift, for example, the short ratio gearbox or the stiffer dampers or the different brake discs. However, I believe Suzuki dealers could source them for you if you ever need them.
6.It is certainly lower than the local swift but not so much that speed bumps would be a problem. However the absurdly BIG ones might be a problem if 3-4 people are sitting in the car.
7.I do not understand this one exactly.
