Hi Ryan,
Front buckets.. like, peugeots version of a bucket-seats, seen in the XS tweed version, slightly raised sides..
Ok. Typically GTi seats, too. I didn't know the term, as we usually use the "semi-baquet" word.
Indeed the problem does exist of finding a decent interior.. these were GTi seats, and were available on ebay (sold at £31 for a full interior!) and unfortunatly I was outbid..
That is a pity, for sure ! £31 for a full interior, including carpets, is a really good thing (depending of shape).
Now I have no idea where to get a decent complete interior.
Check out the "for sale" announcements in, for example, local free papers (I imagine it exists in UK, as it exists here).
They were in excellent condition, except from the usual drivers-side bolster being worn a bit and came with the original carpet and doorcards (front and back).
He he... Considering the driver's seat is likely the one which suffers a lot here too, we, Frenchies, should try to find a UK passenger's seat, and UK drivers should look for a complete French interior : that way, both UK and french drivers would get decent drivers' seats

So I understand that getting those seats is quite difficult in UK, too...
For your seats, have you tried to contact an automotive specialized saddler ? Perhaps overhauling your XS seats wouldn't be so expensive. Sure AA's got a directory for this kind of things.