Off the line pull

Now that I have had a chance to run this car a bit, I have started to notice a few things. Number one on the list is, it pulls pretty hard to the left when I come off the line. It also pulls to the left if I am driving along at any speed and crack the throttle. Off course when I let off it pulls back to the right because I am trying to correct the left pull. The front end is getting pretty light when I come off the line. I have frame connectors, M/T Sportman Pro 255/60-15's and it is an automatic with a 2800 stall TQ. Car weighs 3102 lbs with a half tank of gas without me. I'm 220 lbs. Engine is a 360 with 425HP +/-.
I have SS springs and I don't have a clue on how to tune them.
Any suggestions?

Jack