The switch to a vinyl top cover started at B9479975PPLRXFE which was the prototype Mk1a (PP47). it was built in July 1965. This particular car had a unique rear bulkhead completely unlike a normal Series V or Mk1a Tiger. The car had a sq. corner hood and doors and round corner trunk lid. Plus footwell vents. it's the car on the trailer behind me in the picture
When all of the design elements were finalized, the new B382 sequence of Mk1's began (what we call a Mk1a). Only cars with B382 chassis numbers should have vinyl top covers. Converting a B947 car isn't an easy thing, you'd need to source all three rear top well parts from another car and do a substantial amount of welding... and only starts people asking....is this a reshell... Kind of like retrofitting footwell vents in a B947 car... It can be done, but it's a ton of work!
