Originally Posted by '03CLS6

Update:

So I ended up buying a set of auto comptech headers with the -12 ending carb number and then I was lucky enough to find a 6-speed set that popped up which have the -21 ending carb number. The only difference in the carb # plate is that on the auto set, the numbers are protruding out like the were mold formed and on the 6-speed set, the last two numbers are stamped into the plate which almost doesnt look legitimate. I'm wondering if this is the way they came, because they dont look to have been tampered with...I'm just guessing that since they were constantly having to update their EO numbers and were probably very close to ending production for the 6-speed comptech headers, that rather than revising their tooling for the most current EO number, they just decided to stamp-in the final two numbers.

Does anyone have a pair of these with the similar stamped '21' rather than the protruding numbers like on my auto set of headers?

Originally Posted by zeta

^
My 6-speed headers have the same stamped '21' as the picture above. IIRC, they were purchased around Aug-Sept 2004.