Jim: the standard box has bushing on the ends of the layshaft and where the mainshaft goes through the A gear (gear that the sprocket goes on). The T box has needle bearings on the layshaft and the T2 box has needle bearings on the layshaft and where the mainshaft goes starts to go through the A gear. I think there is still a bush for the outside of where the needles end on the mainshaft.
I assumed by standard you are not asking about the various ratios of the gears like STD.
click to enlarge
Here is a shot of the parts page that shows both the bushings and needles for the layshaft
This parts book page shows both types of A gears