I disagree that 1.38 equates to 10.20.. .... Way to many variables involved to make that statement.
My old car(3350 race weight) most often went 1.36-38 60 foots on 9 sec passes.
As another example I know 340 Ricks gen3 Challenger goes mid/ high 1.3xx while running 9.60's.
Compression, suspension, weight, and other factors contribute as well.
At 3375 pounds, that 1.38 would absolutely not hinder a much better time slip.