I  HAVE A  CHELSEA MODEL 410XUBOX-W4XK  POWER TAKE OFF  WITH A MUNCIE HYDRALIC PUMP MOUNTED ON IT. IT CAME OFF OF A  71  GMC TOW TRUCK I OWNED AT ONE TIME. IT WORKED GREAT  BUT WOULDNT FIT ON THE FORD 5 SPEED  TRUCK I WAS PUTTING THE TOW UNIT ON.  I DONT KNOW HOW MANY YEARS OF CHEVY AND GMC 4 SPEED TRUCK TRANSMISSIONS IT WILL WORK ON. I HAVE BEEN TOLD IT WILL WORK A NUMBER OF YEARS .   I'LL TAKE $200.00   FOR IT.   THE PUMP IS WORTH WAY MORE THEN THAT  BY ITSELF.