hey guys, well today i took the head off of my 260 to try and ID it but im still not sure what i have, even after a good hour and a half of searching Z sites. lots of contradictory info out there that left me dazed and confused. :stupid: So.....I measured the valves and they came out to be 30mm exh. 36mm in. as far as i know the head is stock and it does NOT have the little bump in the combustion chamber i have seen on some e88s, which leads me to believe its a LATE head? no? it also has a little gap between the deck surface and the combustion chamber. in other words, the shape of the chamber and the deck dont blend into each other. what do i have? this is driving me nuts. Thanks a bunch.