45rfe solenoid pack

I have a 2002 Dakota that needs a solenoid pack. I bought a new one for a 99-03 45RFE but the grooves on the bottom are slightly different than the old one. My understanding is that this transmission has been basically the same for a long time and this is an updated solenoid with the white plug. Anybody know if there are different solenoid packs or should this one fit?