On an 8v (which has an 020 box) ratio for 5th is 0.805:1 with a final drive of 3.667:1
and for 16v (02A hydraulic box) ratio for 5th is 0.837:1 and final drive of 3.684:1
I must add there were no different ratio's on the above boxes for the 2.0 8/16v, so unless you have had a different box fitted the final drive and 5th ratio should be the same. The diesel and 1.8 020 boxes did have a different 5th ratio but had identical final drive and for the 02A the diesel's had different 5th and different final drive. Thing's like brake drag, clutch drag and even the road your driving on can affect speed/rev ratio... The gearboxes do have a type code stamped on them (3 digit mine is a CHE) and this will tell you what ratio you have.
