You can do it with KT66 or almost any power valve for that matter. I have built PP amps like this with 1619, HY69, HY1269, KT90, KT88, 6550, EL34, 6L6GA, 350B...It is a neat circuit for PP as well as SE. I took it up as PP and Pete took it up as SE. I named the circuit.
regards,
Douglas