cam profile v6.

Just a small bit of info regarding the version 6 sti's,most article suggest that the only difference between the version 4/5 and version 6 are cosmetic,but the version 6 actually has a more aggersive cam profile,incase thats any use to anyone

You can't group the V4 and V5 the same, The V1/V2 and the same, V3/V4 are the same but V3 has a more aggresive cam profile, V5/V6 are the same. Possibly the V6 could be more agressive cam profile but I've never heard of it before.

Heads are different after V4! V5/V6 heads won't work on a V1-V4

5 and 6 sti are exact same heads, same internals aswell. 99 00 irish turbo car heads are same casings as sti 5 and 6, but have different internals