It looks like the Comp inner springs that I posted the link for in my last post should work based on the measurements I have taken of the pre-installed springs on my heads but I do have a couple more questions. The springs that came on my heads have a smaller flat metal spring inside them. If I buy the Comp inner springs, should the flat inner springs come out or should they be left and the new inners installed inside of them? Also, do you think I should replace the valve locks (7 degree) with 10 degree locks? I called Edelbrock and they told me it wouldn't be necessary but it seems like it would be a good idea.