At one point I took out the interior roof stuff as an experiment temporarily. The headliner, the super-duper-garage-door-opener-mirror and its wiring, the upper airbags, etc. Drove it around like that for a week or so. It's not a ton of raw weight, and it could've all been in my head, but I swear I could feel the difference in the handling (and that was after most of the rear interior was stripped out like MJB's talking about). My theory is that being so high up on the car, the weight up there counts for more than you'd think. Ended up putting it all back for now because the car's still on the street
