The aluminum cylinder head uses 12mm spark plugs. We are currently using NGK BPR6ES plugs as the non-resistor plugs are very hard to find.
NGK Plugs
The high tension leads were sourced from Powerspark. These are 8mm wires and to fit the Powerspark 45D distributor with the top entry cap the ignition leads are intended for the Classic Mini but fit our set up. These are referred to as CORE_L022.
Powerspark HT Leads
Will this help https://simonbbc.com/ignition-bundles/spark-plugs/
Afraid not, at least for the moment. They have most everything else in the NGK line for classic cars but don’t have the PB6ES.