I agreed with Dave visit your local club and see what’s raced it’ll help with spares and setups. The old stuff can be run and adapted for lipos very easily you’ve just got to look in the right direction.
But as for parts the xxx will be easier and cheaper to fix than the yoke, have a look in our Vintage section there’s loads in there to help with the old stuff. But if you want to off load he yoke let me know it’s hard to say not to a yoke