75-K5
3/4 ton status
What's up with these two part numbers? Advance Auto lists N3068SA as "Clutch Release Assembly" whereas N4068 is just "Clutch Release Heavy Duty." What would come in the assembly that wouldn't come in the standard package, and what advantage would I have getting the heavy duty if I would have to buy the regular one to get the extra "assembly" parts? Doesn't seem like much would be in a TO bearing assembly except the bearing. 



