[AMRadio] Modern Equivalent of 35T and 203A

[Crawfish]

Does anyone know what a modern equivalent would be for a 35T or 203A tube be? I 
have a 400-watt output transmitter from West Coast 1939 and 1946 Handbooks that 
use the 35T( made by Taylor) as a buffer between a 6L6 and two HK254/100TH's, 
and the 203A's are push-pull modulators for same.
                                                                                
                                                                Joe W4AAB