Being in wheelchair means you have mobility issues, NOT A BIG DEAL - WILL POWER, Bhai saheb WILL POWER. Human Honsla can defeat anything.
You can write emails on PC - write to Pak Suzuki you will get a reply am sure your shop have a name and a street address start sending emails to other manufacturers as well request them for provision of catalogs express your willingness to pay for the same mention your NTN number that gives manufacturer a sense of legitimacy about your business.
you can start working upon with Pak Suzuki. Pak Suzuki Motor Co. Ltd.
Toyota Hi-Ace Van - tough not difficult, as 16 different variants of Hi-Ace van are on roads in Pakistan, start gathering data - Engine & Chassis 1st 5 figures are identification for variant, so you will know what is most common variant ply through your town and have common problems & requirement.
- when you get parts from other source read the digits (8 - 16) read the description of it, see what vehicles, which models it is common item for.
nothing is impossible.. Keep up, we are all here to help each other.
- P.S - am sorry i was writing in italics before, and someone asked to quit on it which i missed earlier.