I `ve had best luck with these ones. Cheap and easy to put anywhere in the car.

https://www.ebay.com/itm/224246089175?hash=item34361bc5d7:g:ZNEAAOSwJhhfUPCQ

The only one I made to work with 160 baud was the 2 transistor ones, the current 232 chips also don`t work good enough.

I also never managed to make the 2 transistor to work with 8192.
You will...

160 is 12volts signal. A simple 2 transistor adapter to serial seems to work best. putting some 10k resistor on the aldl connector makes the pcm to dumps continuously data at 160 baud.

8192 is...