Tranny? 400-2 a 700r4

[Nickatnight]

I got a 86chevy shortbed bed 2wd 400 in it and want to change to a.700r4 what will I need as far as drive shaft shifter rear mount speedo convertor lockup any help woulb b great

[Captkaos]

you need to move the crossmember mount (should have holes already, and if you get a 700R4, it will have a cable for the speedo.  The lockup works on an electric switch.  The output shaft would have to be changed.