www.jec.org.uk

Is it possible to replace a full leather wheel on an X308 with a half wood/leather wheel from a X300?

no idea....but I would guess the electric controls are different on an X308 to an X300.
In any event a half wood X308 steering wheel can be obtained from Eurojag for around £50.
I refurbished the wood on mine and quite enjoyed doing it. The result was well worth the effort.
Care is always needed changing a steering wheel....because of the airbag.

Thanks. Have since established that you're right. Wheels from the two models aren't compatible. Will contact Eurojag and hope that you're also right on the price. Cheers!