I assume that you are looking to buy. If you want 7 seats find a 7 seater, it will cost both time and money to modify a 5 – more than the price difference.
The D2 was available (according to the price and option list) as a 5 seat Air Sprung – Standard 5 seater and tick the SLS box, that’s how mine was sold, but I don’t know if there are any around.. Mine was even registered as 5 seat by the dealer and according to the delivery doco LR Aus listed it as 5 Seat with SLS. But there is 7 seats and 7 belts AND the compliance plate states 7 - which is what made it easy to change the rego details at QT. Funny that the dealer didn’t even look in side…
The 7 Seat option included the SLS and a few other bits and was bugger all more $ than the SLS on its own, so there were no 7 seat D2s produced with coil rear suspension, many now have been converted to coil.
To add the extra seats (factory or not) it will need to be engineer inspected and mod plated unless the compliance plate specs 7.
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