actually get on the floor and check the rear beam for the suspension type. it will be obvious if its fork or eye type. The puma had a lot of crossover with parts during the build so its not always safe to assume it will have one type of suspension.
Airbag just unplug the battery for half hour. Undo the two bolts on back of wheel and airbag will come off no problems.
You will need to remove the airbag ecu and wiring to kill the airbag light properly and to pass the MoT. Its a fine line between something "missing/defective" and "removed". Its already been discussed with VOSA about MoT and competition cars and how they should accept it where the system has been fully removed. Theyve changed the rules to stop people just pulling the bulb on a car with a defective airbag system.