old rob
+1y
The 72 thru 84 Mazda's are basically the same as the 72 - 82 Courier. They all had either 1.8 or 2.0 liter engines with the exception of a few 2.3L OHC ford engines.
Their are two headers for the 1.8 and 2.0 Mazda engines. The 1.8 in the early years had square ports, while the later 1.8 and 2.0 engines had round port. Just looking is hard to tell which is which.
Goto to see the two options. They also have a hand built for the 2.3L Ford engine.