I emailed them after watching the programme on Thursday. As you said, they can not use their Electric Conversion on an A2.
They confirmed that they would be able to convert the 1966 Beetle. I asked how they would convert the 1972 Type 3 Automatic Variant when the Automatic Transmission uses Manifold Vacuum as one of the determining factors for changing gear. They said only by also converting it to Manual Transmission.