Rick timing through the entire range should be the same regardless of the format. With MSD because it might be a little different but still only a degree or two.
HEI can create a stronger flame kernal so you may see better burning under less than ideal conditions.
Set it (the new dist curve) to be as close as it can to what it was we worked out before.
If its a GM type advance mechanism, screen name Tuner has some tips for setting those up on the Racing Fuel Systems forum (tapatalk version). Ive probably p[osted links to it.
I've Gotta run - you can do it
