I had to put on a different pto shaft, that was pretty easy.
Remove the face plate and bolt the new one in its place, thats probably the hardest part of it all because the hydraulic lines run along the front of the face plate. We unbolted the face plate and held it back like a foot or so with a fork lift while we "messed" with the hydro lines. The lines are pretty long and require some slack on the right side and are pretty tight on the left if I remember correctly so before we removed the lines we marked them at both edges of the face plate so we new how much slack needed to be on both sides when we put things back together. The electronics were very easy to do also but I'm not sure how you will need to do them, does the 6088 use the same style electronic conections as the 2388 or like the 70/8010's.
It is an easy switch to change the hardware over, I wouldn't think you'll have any problems but like I said I'm not sure what your el. connections are on the 6088.