I have an 83 regal about 4000 with driver and full tank of gas small block chev. I am not sure what to do about the instant center of the car. As in where is it,where should it be or how I start to find where it is. Not sure if it is a good thing anymore but I have hotchkis springs all around with the B-bodie spindles 12 inch disks in front with Q1a's all around.