I had my Satellite(GTX Clone) up to about 140 mph yday. I noticed that the car was rolling lft to rght a little. I have the original shocks from 40 years ago on thefront and some new Monroe shocks on the rear. I have a front sway bar to install but have not as of yet. Do I need a rear sway bar as well? And do I ned to replace all shocks with KYB's? I replaced torsion bars last year to handle the front end weight of the 440 but didnt change shocks. What can help keep this car on the road and improve handling without breaking the bank?