I just put my Cal-tracs on so I can't tell you how much better they are, but I'm in the same boat. Was cutting 1.65-1.75 sixty foot, my car was spinning, one guy told me the car was unloading. I went w/ the -1 monos and it still sits about 1/2" higher than the old XHD springs. I keep my front end low but I'm going to raise it 3/4" maybe more. You car seems to have a ton of rake to it. Can you bring the front up some? You might also want to consider 1" lowering blocks in the rear. Did you set the pre-load like the directions state? (bottom out and 1/4 turn) I noticed the butt end raises up as you crank the bars. FWIW my car runs around 11.40@120. I think my 1/8 is in the 7.30ish range. I'm shooting for 11.teens @ 120+.