i have a 1978 280z non turbo and was wondering what the problem was here. any slight bump the car bangs to a loud metallic thud from the front and the car seems to bounce from the front forever. think its shocks and springs. if so, how do i go about installing new and taking the old off?? what tools?? any help will be much appreciated. oh and the 1/4 mile is 14.2 with slight mods, wish it was better.