Not to hijack the thread of is it worth. But, I have an extra one with manifold I was thinking about selling. PM if intersted.
As for the is it worth it? Meaning spending the that kind of money or adding a Oz 250 head?
If you read enough of the threads you will find that yes adding a OZ 250 head is worth it. My dyno charts prove it. But, you can do other things such as Geezer.
As for the money aspect it depends on your budget. I am not sure what the current value is of a OZ head. They used to go for $500 many years ago. Since they are getting so rare probably more if it includes the intake. As stated there is always the new Aluminum head!