On a 'T' it will be an early Td5 lump, so you need to ask about the head gasket - early lumps used plastic (yes, plastic !) dowels to locate the head onto the block. These dowels melted and allowed the head to shift slightly - when the head gaskets were done, and on newer engines steel dowels were used.
As it's an ex-MR vehicle, it would hopefully have been well serviced and maintained, so ask to see the service history/book.
The wheels look really clean - have they been replaced for some reason ?