The 700R4 will require some internal hard parts to be able to tow in OD this is not a complete list but will get you pointed in the right direction:
- HD wide band and new rev. drum
- Sonnax 2nd and 4th gear servos
- upgraded direct and 4th clutch packs
- upgraded front pump
- valve body upgrade
- .490 boost valve
- upgraded low/reverse boost valve
- beast shell
look up "patc.com" for parts - excellent people to work with.
