Early Gen Tahoe brake calipers VS Later Gen Tahoe brake calipers?

[Rayyy]

Does anyone know the difference between NNBS brake calipers (part# 18FR2246) vs the NNBS brake calipers (part# 18FR2660)?

The older 18FR2246 calipers only came on 2007-2008 NNBS trucks/suvs, but the newer 18FR2660 came on 2009-2013, and even up to 2019 on the Tahoe.

I pretty sure these will all bolt up, but I'm wondering if there is a noticeable difference in size? Performance?

 

[y5e06]

bump.
I just pulled the brakes off an '07 at the junk yard and am wondering if I should have gone w/ the '09+