I have Mopar Racer Friend back in Illinois who has the following car: 1) 1965 Dodge 2 Door Post Coronet at 3750lb weight on the starting line. 2) Ladder Bars with QA1 Single Adjustable Shocks on the rear. 3) MT 31x10.50W rear slicks. 4) Moroso 3 way adjustable front shocks. 5) 512" Wedge Motor, 14-1CR, Indy ported SR Heads, Cam is 267/278@.050, INDY Bathtub Cross Ram with 2 750 Edelbrocks, etc. 6) Transbrake with 5000 converter. Here are figures off his 1/8th mile time slip that he texted to me. He has several, very similar ones. 60' 1.3309 330' 3.980 660' 6.2431 660mph 108.18 I think that consensus of opinion might say that if this car had Cal Trac Bars, Cal Trac MonoLeafs, Cal Trac 9 way shocks and Cal Trac 90/10 front shocks (OR any other leaf spring suspension) is that the 1/8 mile numbers would be more like as follows: 60' 1.40 to 1.41 330' 4.10 to 4.15 660' 6.42 to 6.45 660mph 105 to 106 The reason for my consensus is that this 3750lb car with only 10.5W tires is cutting 1.33 60' and 6.24 1.8 mile ETs is fantastic and I think the difference lies in the Ladder Bar Rear Suspension.