You never can be sure about drive-on-the left cars actually being designed for it though.
What about all those All-aggros, Maxis and Marinas built in Britain in the 70s -- for some mysterious reason they mostly or all had LHD windscreen wipers.
Similarly, cars built as RHD may be based on a LHD model, as used to be the case with Vauxhalls and Opels. I had a Vauxhall Chevette once, based on the RHD Opel Kadet. The design allowed a big space on the left side for the brake servo, putting most of the other stuff on the right hand side of the engine. On my RHD version, the servo was of course also on the right, in front of the brake pedal. This left a space you could almost climb into on the left of the engine, but the right was so crowded that getting at the plugs needed two extensions and a universal joint on your socket.