Depends on which series/year b18 trust me I have a 93 cx hatch w/b18 no they dont all bolt up. I have four b18s & 2 b16s in the garage trust me. Also you will have to change a few things if you are using non obd engines. I have done two cx swaps and three on dx/ex/si respectively cx is not the same as the dx/ex/si. Lets just simplify if it is non obd then no if obd1 or up yes. Come take a look and I will show you.