One of the things going for a Bristol is that the company still exists, and is not only making new cars (albeit not too many), but also servicing and refurbishing the old ones. Parts support is amazingly good.
My Brigand is right now with them for some gearbox issues. The Brigand used a special extra-strong version of the Torqueflite, but that only caused a slight delay as Bristol had to source the right components.