Hey Dab, a former champion racer could add some real spice to the Morgan 3 wheeler racing scene....
The cost isn't prohibitive. After all there isn't much required, or available, if you run in Standard or Touring Modified class and all that's really required for Racing Class are a pair of 18 inch front wheels and racing tyres. I doubt there is much advantage in Stage 3 over a well sorted Stage 2 engined M3W.
I planning to run my promised Curborough taster day in the Spring. Would be great to see you show us how to do it