Tube Substitution Okay?

Guys- a dumb question. My Cayin A-88T uses, among other tubes, two 6SN7's. I have, in my stash, two Sylvania 6SN7W. Are these an okay subtitute for the stock Cayin 6SN7 tubes?

Absolutely yes....any 6SN7W, 6SN7WGT, 6SN7GT, VT-231, CV-1988, as well as 6SN7GTA and 6SN7GTB will work fine. I'm sure I missed some...
Should be fine.
Sure. Just check the bias before using the Cayin.
Wholly cow, Dan! You have a pair of "W"s?!
Yepp- But it's not George and Jeb!
Six Ess Enn Seven Dubya!

Poor Neil, left out again.
Dean- If Neil was your brother wouldn'r you hide him? :)