I got a 2005 with 10,000 on it pulled the head,can still see the factory hone,the gal I bought it from never derestricted it,ran belray synthetic,it was a bit gunked up at the pipe.It"s the one I'm doing my stock build on as is.You did derestrict?So far so good,I do have some oversize pistons on order though.If i had some stock rings I would have put them in.They seem to be hard to get.