you gotta get those roll cage!! that thing has a lot of muscle under the hood.. not safe without roll cgae (IMO) so if you crash (hope not) that will save you! also about weight reducion.. mmm l dont know.. depends on what you wanna do man.. if you wanna make that thing complete drag car not street then go for it.. get rid of back seats and every single junks that the car doesnt need..
but your car is still awesome, street legal, you can still have fun with 4 people on your car.
if that would have been mine, l would keep it the way it is.. cuz it is already a monster!!