I can't remember which car it was that I had that was half imperial and half metric. I needed 2 complete sets of wrenches to work on it.
Ford did a lot of that.... my brother had an 81 Ford F 100, I use to have to fix for him.. ( checking the oil is a big accomplishment for him)... that thing was half metric and half the British/American scale.
If you ever needed anything to fix that truck, they wanted to know what plant it was built at, what week and month.. and half the time that didn't even work out.
I worked in an auto factory for 2 years in college ( GM ) we used what they brought to our station, where we were assigned.. I'd bet that is exactly what Ford did also...
