66 Dart GT HT Whatsitgonnabe?

Lets put it this way i have a 1994 chevy 1500 1/2 ton silverado pickup i bought new in 1994. I still have it. The engine is a chevy gen ll 350 V8. The engine is all SAE, but the rest of the truck is metric. LOL. When GM went to the LS series of V8s everything went metric.

Chrysler went metric in the 80s with their new at the time FWD turbo cars, however the 318, and 360 stayed SAE up until the end of production in early 2000.

Everybody started going that way in the 80s , however with existing engines and tooling for them it was more economical to stay SAE until those engines were phased out for newer designs.