Transmission and body style codes Amazon wants don't match Toyota codes??

Was looking for a bed cover on Amazon and they said they needed more info on my vehicle. I understand the basics like double cab, bed length, etc but they want the transmission and body style (in addition to already selecting double cab). The selections for body code are like GRN305 and similar. Nothing like that on toyota.com vehicle specs from my VIN. Toyota says my transmission is 6AT. Amazon has two selections: AC60E and AC60F. What's going on?

 

https://www.tacomaworld.com/threads/2016-v6-chassis-codes.386031/

GRN is a toyota model/ chassis code. Usually as you select the other options before hand it limits these codes down to just a few. For what you are buying it's not going to matter too much. There are only 2 bed sizes.

6AT is 6 speed automatic. The others actual transmission codes. You have 2wd and 4wd. Again this doesn't matter for what you are buying. Just pick one or look it up.

 

The door jamb label may have that information

 

I already entered cab size, bed size and 2WD/4WD questions so these are really redundant for most things, especially a bed cover. I will look at the door post sticker. If it isn't there I will just choose one at random.

 

Thanks! The info is there.