I intend on using my V6 STi heads (that are currently on a JDM EJ207) on my new motor i am having built.
I would just like to confirm, they are infact Ver 6 heads.

They are stamped with LH C 006 and RH C 007.

Have searched but cant find much

Any help would be appreciated.

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!

if the motor is factory and un opened you can be pretty certain that they will be the oem v6 sti heads if the motor has been touched in any way then i would start looking into it

custard is love custard is life

It probably won't help but mine are marked 007 and 008. They do have bucket over shim.

Yeah i knew aus spect STI's have them numbers (007 008) but was unsure what the JDM ones had. As mine is a JDM engine

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!

STI 5/6 should have under bucket shims. The head castings were more or less identical it was the cams and shims that were different. If you have under bucket shims then you can be pretty sure they are STI heads.

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605whp
Quarter Mile in 10.9 seconds @ 135mph /217kph
0-100 kph 3.2 seconds