Should bus transceivers be used for a legacy M68SEC000?
The solution to your answer lies in the datasheet for the chip you want to use.
Look for \$Voh, Vol, Ioh, Iol\$.  These characteristics tell you how the chip will drive the busses.

Next look at the chips you will be hanging on those busses and look at their complementary attributes \$Vih, Vil, Iih, Iil\$.  Especially the \$Iil\$ and \$Iih\$.  

Then add up all the \$Iil\$ for each chip on the bus and see if it is less than or equal to \$Iol\$ for the CPU.  Then do the same for \$Iih\$ and compare the total to \$Ioh\$.

If the total input current for all the chips on the bus is less than what the CPU can provide, then you do not need drivers. If the total current is more than the CPU can provide then you do need drivers.