what else???
you can convert to manual windows with the lighter glass, lexan or something. remove emissions, run the exhaust dumped right off the headers, lightweight carpet..ect there is a thread about this somewhere.
If so what?
As for what's possible well it depends how far you are prepared to go and how much money you want to spend.
Basically taking out anything not needed will reduce weight. But remember stuctual components shouldn't be removed.
You could replace body and door panels with either aluminium of carbon fibre. You could have thinner glass windscreen and perspex side windows.
1 piece plastic seats, remove the dash and mount a tacho/speedo on bulk head. remove all non essentially electrical components (windows, seats, air con, heater if in hot climate, etc.)
Remove all non needed trim, carpets, sound dedening, roof trim. The list is quite endless really.






