Colin NSR you don't want an '8 plug full stop, the rear plug is no problem once the tank is off, '9s in front and back will be fine for a std bike. The shorty plug is supposedly needed for the rear head on the front cylinder conversion but it's a lie, the plug and cap are around £40 as well
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread