Spark Plugs TA14

I am new to the Alvis Owners Club having just bought a TA14 so hello to everyone.
The most recent advice on spark plugs to replace the L10 seemed to be Champion  RL86C

Any improvement or are these still recommended?  Thanks Roy..

Hi  Roy,
If you can't get L10, L86C is the modern equivalent. RL86C is the same plug with a built in suppression resistor built in. Not necessary if you have resistive plug clips.
Peter Milne

OK, thanks for that, Roy.