That's a "Twin Hot Spot" exhaust, (there are 2 holes in the flanges just above the Exhaust to head flanges). It will not fit on a 1200 engine, it's too wide, and those "twin hot spot" flanges will not mate with the 1200 inlet manifold pre-hearer pipes.
It's meant for a 1300 (AR code) engine. Flog it on fleabay.
Don't know what the thing in the placcy bag is though.
FYI. "Twin Port", refers to the inlet manifold to Cylinder head connection, all 1200's are single port, as were early 1300' (F code), and 1500's (H code).
Later 1300 (mostly AB & AR code), and 1600, (AD code) engines are "Twin Port"
It's meant for a 1300 (AR code) engine. Flog it on fleabay.
Don't know what the thing in the placcy bag is though.
FYI. "Twin Port", refers to the inlet manifold to Cylinder head connection, all 1200's are single port, as were early 1300' (F code), and 1500's (H code).
Later 1300 (mostly AB & AR code), and 1600, (AD code) engines are "Twin Port"