I have a Mamba bucket seat for my road legal track car, the type that bolts from the bottom rather than the sides. I have two "slidey things" (WITHOUT THE BRACKETS UNDERNEATH ON THE ENDS OR THE HANDLE) similar to seen here:

Can anyone fabricate me or flog me a bracket I can use as an adaptor, or point me in the right direction?
Cheers! If I can actually take a passenger I can a) justify putting the car back on the road and get it to circuits b) take an experienced bod to give me top tips...
TIA





