1500 gearbox identification

[dodojoe16]

Hello all.... I want to put a overdrive in VVJ now I know you need a certain gear box and crossmember but am unsure as to what to look for when buying a box. Any help will be much appreacted. Thanks

[GTS290N]

Do a search on this forum for overdrive conversions, 30 minutes of searching will provide you with all the information you'll ever need.
If after doing a search you still need help, come back and ask again.

[MIG Wielder]

I found this one useful.
viewtopic.php?f=10&t=32211&p=299160&hil ... ve#p299160

Right down to nuts and bolts.