If you go to this web page Tom Wood's Custom Drive Shafts - SYE
it will tell you how to measure what you have now. Then call Tom Wood's Drive Shafts (one of the sponsoring vendors on the forum) and tell them what your current set up is and that you plan on getting rid of the t-case drop, they can do the math and custom make a drive shaft that will fit your application. Mine came out perfect. Don't forget, when they installed the t-case drop, they would have also installed a drop bracket on the t-case shift linkage, (unless they installed a cable shifter) which will also have to be removed.
A motor mount lift could remain.