
This useful thread explains the difference between the two systems.
https://www.the75andztclub.co.uk/forum/showthread.php?t=172172
a collection of motoring information on performance, modifications and maintaining the classic MG ZT and Rover 75 cars. Also the servicing, repairs, diy mods and maintenance on my MGZT including stuff I find about the Ford Mustang engine which powers the 260 V8
This useful thread explains the difference between the two systems.
https://www.the75andztclub.co.uk/forum/showthread.php?t=172172