Cab mount bushings are 4 different kind at the quad cab, every "line" has its own design. Don't know for what it is good for...
The number 9/4 are all the same.
Did I mention that I installed a full new set from Energy Suspension, bought at Genos?
I bet your upper bushings are worn out too, mine looked terrible when disassembled.
Torque for the bolts is 60ftp or 81Nm.