2000 vs 2003 Tundra drop in liner

So I have a 2000 Tundra and i found a drop in bed liner on FB marketplace but it says for a 2003-2006. I was always under the impression that the beds were the same for 2000-2006 on the Access Cabs. I even went to Dualliner and there is 2 slightly different model numbers for the 2000 vs the 2003. Anybody know what they changed between these years? Thanks

 

If you happen to be in the PNW I have one in stellar shape off my 01 AC id give away for free.

 

Any bets even Duraliner knows what the differences are?? I got one from Penda and it was about 3-5/8" too shallow and the tie-down cutouts were in the wrong place. They couldn't tell me why since the part number was correct.

In the end, they refunded my purchase and told me to do whatever with the liner. Wanna guess what's in my truck with a 3-1/2" false floor?