What month is the car Muzza? Early ones have eight holes in the floor for each seating position and later ones have four. Either way, any LH/LX bucket can use the same holes as the bench. There shouldn't be any modification needed.
4 holes. Len. AXISTER. 4-75 LH.JPG
Thanks, it’s a 4/74 S model, that has a bench seat,
I have now picked up the seats, I see the passenger seat has the quick release, but not the drivers side,
later in the year I will do the work and if needed make the inner mounting plates if needed, including if needed the blind inner front mount