Lately , my rear end seems to be acting kind of squirrely when I get into the gas . Is it possible that I just need to install some new shocks? These have been on for a number of years or do I need to do some other mods to the rear suspension ? It's a stock 98 LS1 . Can anyone make recommendations on a good shock without spending too much cash? I was looking in one book I have and Edelbrock wanted $225 per shock ! Thanks