Cyldinder Head Stands

I'm not porting, yet. So I just want to get the heads up off the table to do springs and simple stuff like a port match. If I were to go heavier into it I'd build something that rotates. That is the only downside mounting on the rocker shafts is the rockers can't be there, but probably a good solution for porting. If anyone has a set of the spike style I'd appreciate a length and diameter off the rod, otherwise I'll wing it.