Today I was under the hood checking the oil and doing a random visual inspection around the engine bay. Thanks to the afternoon sunlight, I happened to notice a name plate with lettering welded onto an exhaust runner on the passenger side header. (only side visible as the intake blocks the drivers side) Woah.
The name plate had “STRUP” pressed into it and upon closer inspection with a work light, the tubing looks nicely formed too. Sooo... apparently some prior owner installed aftermarket headers on my car. Sweet... I hope they last a while and dont crack on me.