During my motor swap this weekend, I discovered that my bell housing says 3f on the top. My 60 is 1987. I only noticed this after I installed a bell housing from an 84 2f and found that the clutch slave cylinder doesnt bolt up the same. That was the only thing I noticed to be different between the 2. Are there any other differences. I bolted the 3f bell housing to the 84 2f and everything seems fine. I was just curious as to why a 2f would have a 3f bell housing.