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Ok i've found those cast numbers, they are 11228 and 11268.
I guess they are way off for my Superbird..

Thanks for the help

i guess i'll have to try and fix the original one..



I'm all for correctness, but since all 906's are the same and you can't see those dates unless you remove a valve cover...


Dave






But he'll sleep better at night knowing that his heads have the "correct nummers"




and it will run better if it has the correct dated heads..

i've heard it's good for a easy 5-10hp gain!



and if you date coded your significant other "somebody" will be running better !!

I am truckless..