Saving Old Seagulls

Seagull 40 plus 1986 model with cdi ignition[,The cdi unit has failed ,can i fit a wipac mk2 complete ignition system ,as a replacement,or is the key way in the crankshaft incorrect for mk 2 system
The mk 3 flywheel has 2 keyway settings ,one position for 40 range , and another position for the centry engine,
The mk 2 wipac flywheel only has one keyway
has anyone overcome this issue

John Williams is able to get your CDI repaired.

Any idea on costing on such a item

It might be best to ask him at Saving old Seagulls.