I am still finding some good websites, and I got the lead. This is association in Japan, and You should do business with members of them only., and use safe trade, to transfer the money. (it's additional $100 fee). Your money will be safe and secure. The only thing remains is the Car, which you can only inspect when it will arrive in Pakistan. May be someone can handle this process too.
https://www.jumvea.or.jp/member.php?safe_trade=1
I have already bought the car via my own relative, contacted today with the custom agent, now arranging passport for that car. as pointed out @capsat you need an expat, Further these custom agents can provide and handle the passport and other procedures by themselves. It's Mira ES 2018 which I am importing.
Insha'ALLAH i will provide my whole story with Pakwheels.
Just for the people who want to start, as told me too, you should start with lower value 660cc and then go above.
As pointed out @nomi01, you should avoid these middle companies at all.