4.10s or 4.56s

Quick question, I have a 70 duster running a 340 with Ross12.1s, scat 416 bottom end, brodex heads, lunati valve train, highrise an a domintor an other odds an ends, Cope Racing 904-4 prostreet trans as well, it is still street driven(no highway only local shows/meets an icecream runs) running 275/55r14 dot Hoosier quick times, I am trying to decide on either 4.10s or 4.56s any thoughts, mainly run 1/8th mile at local track
- heres this sry forgot to add the cam specs ididn't think about it, it's a 600/600 full roller 3200-7200, 3500 stall, eddy super vic, if you need anything else let me know I built the motor have the full build sheet, pretty sure gonna go with 4.56s