If the replacement parts meet the original specifications and appearance, I would call it "original equipment", meaning no modifications.
1. Let's see if someone says it must have the original parts that came on the truck, in order to be called OE?
2. The next "degree" of OE would be GM replacement parts?
3. The next "degree" of OE would be non-GM replacement parts that look like the original GM parts?
4. The next "degree" of OE would be replacements that me the original specs but look different?
