I'm not quite sure by what you mean by what you need as far as the "transmission and powertrain", would you be able to get back to me as far as what parts you are specifically asking about?
Also, for any information I would need to know what model of 1979 Jeep you have. view full answer...
It sounds like you have the Dexter Trailer Hub and Drum Assembly # 42866UC3 in which you'd just need the Trailer Hub Wheel Stud # 7-122 for a replacement. view full answer...
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Flat towing your 1983 Jeep CJ5 that has a custom bumper will require D-rings or another method of attaching a tow bar. The maker of your custom bumper may offer a suitable kit but I urge you to check with them anyway to confirm that the bumper is rated for flat towing. This is not necessarily the case so you'll want to make certain before you proceed. We do have d-ring tow bar adapters such as # RM-035-1 from Roadmaster to allow hookup of... view full answer...