witch is better to use the 6 or the 8 AN steel braided line

the suspension section will not allow new threads, so I guess I'll post my question here:   If a person wanted to convert their '87 4bolt LSD to an '88/89 - are the diff (pumpkins) identical? Are the torque tubes identical? I know the 6bolt shafts and hubs need to swap.   What if a person wanted to convert a non-LSD SQ into an LSD - do they need the entire subframe, or just the diff, axels, torque tube, and hubs?   http://i1210.photobucket.com/albums/cc409/motocam360/Black%2089%20SQ/SHPrearsusp

So my starter went out and my throttle cable locked up all at the same time? Then I replaced both of them the new starter wouldn't start the engine then the new starter burnt out and smoke came from it and my new throttle cable got stuck again any ideas ?

i have 1 left mitsubishi valve cover,,remove front dodge caraban,,$45+16shipping   http://i1072.photobucket.com/albums/w366/carlosa76/001-8_zpsf2a81ced.jpg   http://i1072.photobucket.com/albums/w366/carlosa76/002-10_zps8babca3e.jpg   thank boston