The best way to tell, is the front of the car is higher then the rear. Looks like your car is doing a wheelie!
If they are the original spring the probably need replacing. I would do a matched set of front and rear spring from www.mustangsplus.com or any of the popular Mustang vendors.
Regards,
BillGear
1966 Mustang Coupe, 302 custom roller cam, holley 650dp,http://www.289mustang.com
http://www.289mustang.com/images/vmfcar.jpg
If they are the original spring the probably need replacing. I would do a matched set of front and rear spring from www.mustangsplus.com or any of the popular Mustang vendors.
Regards,
BillGear
1966 Mustang Coupe, 302 custom roller cam, holley 650dp,http://www.289mustang.com
http://www.289mustang.com/images/vmfcar.jpg