Aha, they obviously did improvise, on the components, at least. 🙂 With that Mountech front derailleur, you probably also had a Mountech rear, which were known to have problems. My derailleurs are both Suntour XC. And you have a Sakae crankset, instead of the Shimano I got.

But we both got those cool Suntour Power Thumbies! 😁 They actually look kinda cheap, but they work great, once you get a feel for them. Especially for trimming. It took me most of the first day of riding, to figure out what that noise was (derailleurs rubbing the chain) and re-learn trimming. 😁😉

EDIT: BTW, I’ll give you $10 cash for that slingshot stem? 😉 Just kidding, obviously, but those are cool. 😎