JDM B18C engines come in 2 forms.
One has a red cam cover with P73 stamp.
The other has a black cam cover and dual stage intake manifold with a P72 stamp.
http://en.wikipedia.org/wiki/Honda_B_engine#B18C
"Question:
There is a B series engine with the marking "B18C" with no numbers that follow, is this a Type R engine?
Answer: Not necessarily, the 96-spec and 98-spec JDM Type R has a red top engine and the DC2 DB8 JDM Integra SiR-G has a black top engine with dual runner inlet manifold. The red top engine has been hand built with forged pistons so produces slightly more power and torque than the black top engine.
On the JDM motors they could be a GSR or Type R. In the United States and other country are stamped with numbers after B18C."
Only in other countries, not Japan, do B18C engines come with numbers behind them.
For clearer verification see below.
B18C found in:
96-98 JDM Honda Integra Type R DC2 197hp
96-98 JDM Honda Integra Type R DB8 197hp
93-95 JDM Honda Integra Si (DB8, DC2) 178hp
95-98 JDM Honda Integra SiR/SiR II (DB8, DC2) 178hp
98-99 JDM Honda Integra SiR-G (DB8, DC2) 178hp
B18C1 - USDM spec Integra GSR (How do you know? Because the DC2 was only released in 1994 for Americans.)
B18C2 - Integra VTI-R AUDM (Read: Australia domestic market) VTI-R is their version of GSR which outputs less HP than both the black top JDM B18C and USDM B18C1 GSR motor.
B18C3 - Integra Type R for what country i don't know.
B18C4 - Civic VTI/S 169hp for the UKDM and EUDM.
B18C5 - Integra Type R 1997-2001 USDM.
B18C6 - Integra Type R UKDM and EUDM versions.
B18C7 - Integra Type R AUDM.
