69 Notch Barracuda - Rebirth

Trick I learned for reassembly, if you are not aware already: Find a wooden dowel the same diameter as the shaft that goes though the case that the countershaft floats on. Cut it to the same length as the countershaft so it can sit inside without protruding. Pack the needle bearings in grease and put them around the dowel. You will have an assembly which is the countergear, the bearings, and the dowel. You slide the whole assembly in place. The dowel keeps the needle bearings where they belong. You then use the shaft that presses in from the outside of the case to displace the dowel as you install it.