There were two designs of fitting.
Early cars (up to 1992) had push on fittings at the distributor cap and the coil.
Later cars (ph 3 1992-1995) had DIN style clips at both coil and distributor cap.
The leads are shared with Starlet Turbo, which also transitioned between the fittings in mid 1992.
Magnecor can supply thick competition style leads in 8.0mm (blue) or 8.5mm (red) although close to £ 100 for a set.
I have just purchased a set of Intermotor leads for my phase 3 and they fit fine. Cost was £ 22.07 plus VAT
Intermotor part number 76375 is the ph3 type.
You can fit a ph3 coil and ph3 distributor cap to earlier models if required.