Just an update to the info I posted on this thread.
I have now completed the 2.4 Ghz conversion of my T6X Futaba transmitter and it was really quite easy to do. Did it all with minimal modifications to the circuit boards and the case so it's all reversible if I ever decide to put it back to 35 Mhz use.
Only thing I discovered was you have to watch for the letters DSSS and FHSS. Turns out that the receiver I bought and put the link to in this thread, isn't compatible with my DSSS transmitter so I had to buy another one with the DSSS standard. Once I had that it connected and worked instantly.
If anyone needs an 8 channel Corona FHSS receiver, never used, let me know.
Craig.