is my granny 4spd sychronized?

[darush01]

I have a 72 c20 2wd 4spd it has the factory 350 still in it running great but what Im trying to figure out is if the transmission is sychronized or not I do not know which 4psd or the gearing I have aint had it that long I say it is definatly not after driving it but I have people telling me that it is mine is just messed up, I just want to know if any of the transmissions in these trucks were not synchronized.