Since the Philippines can't manufacture curved sheet metal, maybe the local manufacturers can go for an alternative material, fiberglass (as shown by BAR).

TVR cars are generally a limited production sports car with a mix and match of parts taken from different manufacturers and assembled together into a tubular frame chassis and wrapped in a beautifully sculptured fiberglass body.











I would think with mass production, fiberglass panels will be cheaper. Engines can be sourced as needed/required but limited to maybe two to three types to ensure proper fitting in the chassis along side other engine bay components.