I'm just referenceing how my buddy's Lincoln with 4.10's and a hot 302 with the 2.2 KB felt. The 4.10's were not too much gear in my opinion. As a matter of fact the clutch gave up before anything else. I'm thinking Phil's curbweight at near 4000lbs with driver and then looking at the 96-98 4V low end torque curve and thinking that 4.10 should be spot on with the KB...I could be wrong...it's happened before....but if would launch well and feel good on the street for sure...3.55's ? Not so much me thinks.....