Just a comment on the clutch for RBT. Red at Mcleod is the man, I used a heavy duty 5.0 diapraghm pressure plate, the disc is very special and be certain to order it directly from Red. Mcleod also has an adjustable T/O bearing(with a cnstant run bearing) that you will want to use. There about 1/2 less space to work with because of the shorter M1 input shaft abd bellhousing. I can find the correct part #s if anybody is interested. The shift rods are 5/8 soft steel rod and that is an easy size to get apexi joints in.
The shifter linkage is no big deal, you can make it in multiple (straight) sections as needed to go around oil pans and crank pick ups.