I'm glad I found this post, I am currently building a monster GN. I know the Champion heads are where it's at and I am looking for the best of the best. I presume you have the flow numbers for the heads, if you are willing to separate, I am interested in just the intake valve from the highest flowing cylinder.
I would really appreciate it if you could post a video of this valve rolling on a perfectly flat surface so I know that it is straight and true. I don't want a valve that has been smacked up.
If you have the individual spring pressures of the exhaust springs, I would also be interested in the lowest value spring too.
I have collected 3 super high flowing valves and 5 springs so far, and would like to have a complete set of heads by the end of the summer.