its the same thing, but slightly different.
the AODE is the tranny code for the Electronic Automatic Over Drive tranny. it replaced the AOD in the mid 90s. the 4R70W is an AODE but it has slightly wider gear ratios. you technically have a 4R70W in your car, but if you buy anything to go in your tranny, anything for an AODE will fit
**I have sigs turned off, so if you're asking for advice based on your mods, I can't see them**