Nothing too crazy, I had a 96 and did a jdm front and rear end conversion into the 98. I put on some stance springs, rolled fenders, gram lite wheels, strut bar, intake and some interior things like putting in a DVD player. I miss it so much, it was such a fun car! Im really enjoying the prius, it's so smooth and it feels like im driving a spaceship. Im definitely going to tint the rear windows this weekend. Im so tempted to start looking for wheels to put on!