Actually something else to consider is the dwell the coils require.
If you arent supplying the correct dwell, the coil wont be operating at its optimum, meaning when it craps out just a little it really craps out, if that makes sense,
I did an LS2 coil conversion, and with stock dwell it would misfire on boost (18psi) with brand new coils. Once dwell was adjusted with Nistune, miss went away.