JUMP ON THAT!
Live PTO five-speed change overs go for $1,200+.
No, you cannot use your Sherman with a five speed but you can sell it for around $750.00. You MAY then be able to sell your 4 speed for $200 - $250.
It's a direct bolt in. Be certain to get all of the clutch linkage parts as well as the throw out parts.
DO NOT hesitate.