Call Vee W Services in Bristol, if you're only *just* into Wales - £10 says they'll be able to get you the 16V unit.
Thanks for that, but as long as ill have no issues running an 8v rad ill go with that as I need it asap.
Just spied the below on ebay, advertised as a 16v rad and fan but going on what ive found out it seems to be the wider 8v rad with the 16v fan setup.
Are the brackets on the right the kind of thing ill need to be making?

Thanks for everyone's input.