Hi Ken

Cannot remember if non aircon cars have the drain, sorry. The sunroof front drains run down the centre of the A pillars sealed in with expanding foam so nothing to check except the top connection. Draind into the top above the front wheel arch but nothing to check or get displaced. Dean's leak is a real possibility so might well be worth checking behind the trim round the drivers door frame while you have the seat loose and can get at the "B" pillar trim screws.

John