Imported cars are on someone other name who has japan passport....
Cost breakdown can mail it to u, send ne your email... Roughly it us Rs 22000 for filer, Rs 32000 for non filer..
I personally didn't go to excise office... If u do it through agent u also not need to go there...
If u go yourself, there is a set of forms available at counter, full then all and submit along with fee, it takes about 2 hrs...
U have to fill the TO form on behalf of the person on whom name the car has been imported, you would have his passport copy, look for signs over it.... After submitting form the police inspector will check your car chassis no etc...
If u go through agents, no such procedures, only have to give I'd card copy to him... They normally charge 30k approx from filers...