I look around some ssc trans cores and some have 113 301 103 "K" and some other 113 301 103 "L" (this is the main trans housing.Is there any better / worst of the other or just the same ?
On the ones I looked at in the shop,the "k" is the 75 and later,the "L" is the earlier ssc case.If all things are equal as far as condition of the cases,I would use the later one.It has some extra ribbing almost like mini gusseting
Yes I thought the letter thing was wierd too.You would think the opposite,but not to be.Changing cases and diffs,etc depends on your skill level.If you're not set up to properly setup the r/p backlash and bearing preload,I would use the bearings,races,shims,and side cover from the trans with the r/p you want to use.Install the r/g on the ZF and install,hopefully everything will set right up.Good luck.