I'm researching output tubes for some projects I'm hoping to finish (experiment). I'm reading up on the tube data and Z-out. My short question, if a 6L6 is 5000 Ohms, are two of them added up for 10,000 or divided for 2500? Also, are 6V6 close enough Z to be used on an OT designed for 6L6? Part of why I'm researching this is that I'm finishing up a Deluxe Reverb type thing, and I have a 50watt 6L6 Multi-Tap OT I'm wondering if I can use for this build.