They were Jenvey, the car was far from standard with Kent cams fitted, bespoke ECU as well as the TB's, Librands exhaust etc.
I don't have figures as all the spec sheets were given to the new owner when I sold it but it was very tractable low down and when the cams kicked in at 4000 rpm it became another car, loved to be revved as I believe most twin cams do.
The PO had also spent fortunes on suspension and other mods, good car. I have some engine bay photos somewhere.