the toyota body shells are not made here - even till the last corolla - the shells used to come from Hungary.
The whole wiring harnesses are made in Karachi in Korangi Industrial Area, the carpets and mattings are made by a carpet company whose office is on Sh Faisal Mehdi Tower. (Pak carpets I think)
The seats are made by Master foam (these guys also make genuine Recaro racing seats, and also seats for many european cars). These guys also make the door gasket rubbers for nearly all cars.
The dashboards are made by either Master foam, or the parent company of Adam Motors in Bin Qasim. (that company for sure makes the dashboards, bumpers, air filter casings and interior plastics of the cuore)
The paint is supplied by Berger or ICI depending on manufacturer
Allwin engineering supply a good part of pressure cast aluminium pieces, I dont recall the name but its a firm in Lahore that makes the brake discs for all our Pakistani cars along with all the steel type wheels.
All electrics, save some little motors etc are imported from China/Japan - dictated by the original parent company.
I know that toyota engines are finished for service here, they come as bare bones. The A/C now found in Corolla is sourced from Pakistan completely. There is a firm within the Habib Group that makes the missing pieces.
The gauges are built in Pakistan (a firm in EPZ) (except for the Honda digital readout)
I cant recall the name correctly but their is a place outside of Lahore that makes the suspension bushes.
Allied Precision Engineering also has some major purchase orders for the supply of brake drums, pistons and crankcases etc for motorcycles
Fasteners would be JB Saeed, they make some real good quality nuts and bolts.