Trying to sit lower in a 986
 

I've been looking around online for a definitive answer as to whether an alternative seat could get me lower in my Boxster 986 and not found one as yet.
While searching, I've found the following suggestions which I'm not sure work so I'd like to check before potentially throwing a load of money at it!

1. Porsche 986/996 winged back 'sport' style seats: are they any different to the standard 'tombstone' backed seats?
2. GT3 seats: I'm not a fan of the look but do they get you lower?
3. Recaro Pole Postions with a fixed base?

At the moment the car is uncomfortable for my to drive on longer journeys as I'm bending my back. I don't want to get rid of it as I really like this car so I'm hoping there's a solution!

Looking forward to hearing other people's thoughts and advice