Both will work in a Johnson Ranger and no doubt the 1614 is the better choice, but does anyone have facts as to the feasibility of using the 6L6? I personally think the 6L6 works fine, but doesn't last long in comparison. Any thoughts? Thanks, Rick/K5IZ Try 6550 or KT88 used them for over 20 years never damaged or harmed any component on a ranger 1 Brad Kb7fqr