Paul's car is unquestionably a Litton & quite an early one at that.
The gear linkage you describe is a Litton part for sure, I remember boxes of those laser parts in the Litton workshop back in the late '80's, the yellow demonstrator car was fitted with the same set up.
I remember working on an Allora in the Litton workshop but that was a Yellow car. It had Lada top front wishbones that were interfering with the Compomotive split rim wheels.