Dave
As well as Chester suppliers such as Arc, Chronos and RDG all sell QCTPs and it is likely that there will be one that will fit your machine. You need one that has similar dimensions to your existing tool post and lathe centre height. The only thing you may need to make/modify is the centre fixing.
As for the collet chuck, remove the chuck and measure the outside diameter of the mount and the recess in the chuck. These sizes are fairly standard and you should find one to fit.
There are many accessories available that are not specific to a particular make/model but the items Jason mentions such as steadies, faceplate change gears etc are and you may consider getting them whilst they are easily available.
Sorry I can’t be more specific as I don’t know your lathe but hope that helps.
Regards
John