It's a '68-'72 250 motor with rochester monojet carb and I assume it's original but not 100% sure. The one I have uses a coil that's in between the exhaust manifold and head and has a rod that connects to the choke linkage (right?). I was shopping for a direct replacement but can't seem to find any just like mine- they're mostly electric choke. The carb I have has a stripped out bolt and leaks gas everywhere and someone also tried to weld the linkage back together (after it must have broke somehow) but did an aweful job and so on.