CD Long
Removing the creeper gear from your 1200 is easy,just bring it over to my place and I will have it removed for you in no time flat.
You will need the longer driveshaft after removing the creeper gear, but removing the creeper is not much of a chore, just a pita as you need to either get the tractor up in the air or crawl under it to get to the drive pins and bolts that hold the creeper on, now if you have a removable tunnel cover on the 1200 it will be a whole lot easyer, remove the cover, drive out the driveshaft pin. BUT befor you do any of this you WILL need to unhook the driveshaft from the motor, disasemble the drive shaft clutch and springs to remove all the tension of the springs as you will need these parts later to install on the longer driveshaft and it is easyer to disasemble them in the tractor than out and a lot safter. You may need to remove the motor to disasembel the clutch.
You know its a whole lot easyer for me to do than type out the instructions.