wood spine question

[EHK]

Is spine consistent across different kinds of wood? I have some 50-55 cedars that fly great out of my bow.  I would like to order some surewoods and actually have test kit on order, but is it necessary?  Would i be safe just ordering 50-55surewoods?

[Fletcher]

You'll be safe, but you may be surprised what you learn with the test kit and paper tuning.  IMO, test arrows are one of the best investments an archer can make.

[Orion]

No problem if you order them in the same diameter and physical weight as the cedars.