Oh i thought this was an srt6 i didn't see it was a limited. Having enough power to break it loose is going to be an issue.

But disabling and the TC and BAS is easy. I can give you pointers on doing that without losing ABS. simply removing your fuse doesn't disable it completely.

Locking the rear can be done.

Like i said the drive by wire system is going to be your biggest issue with being competative in drifting. This setup has a fraction of a second delay between actual throttle adjustments at the gas pedal and adjustments of the throttlebody on the engine.

Everyone is familiar with turbo lag, and automatic transmission delay(kickdown). Have you ever punched your gas petal in an auto and the car doesn't take off until the transmission kicked down to a different gear? well the drive by wire system is simliar in that it has lag between the action of your foot and the response of the car. Older cars tend to have an actual mechanical cable from the pedal to the transmission(autos) and throttle. Drive by wire systems dont have that mechanical linkage and actually communicate electronically. Now drive by wire differs between manufacturers but thats the gist of it.