If they're like non-generic 240 parts, good luck getting them for a reasonable price, particularly the dash if it's different - perhaps your roof guy could do it at the same time?.
Here's something that'll blow the restoration budget real quick:
https://www.ebay.co.uk/itm/125566627195
A monkey for
half a seat cover!
Forget bodywork, the real money is in upholstry...