brake question

hey guys,
i just wanted to run my rear brake upgrade by you to make sure everything will work. i have done research and i believe i have everything i need.
my fronts are already done so i am focusing on the rear.
however i am upgrading all the lines to stainless steel so i will order those for my year truck.
for the rears i am going to order 2001 chevy tahoe rear twin piston calipers along with the powerstop cross drilled and slotted rotor kit with ceramic pads.
my main question is just to make sure that these calipers will bolt in replace of the old single piston ones and also will they clear my wheels? (stock oem 16 inch wheels)?

IIRC the bigger mounting brackets will rasie up the caliper and the 16" wheels will not fit. You said the fronts are done what size rims are you using upfront? Because if you ran the 13" rotors upfront you shoud be using 17" at least. If any of that makes sense.

i just switched the fronts out earlier this year with power stop crossdrilled and slotted rotors with ceramic pads. i used the stock rotor size. my question is though is that i know some of the early 2000's tahoes had 16's on them from the factory and the only option they have when you buy new calipers are the twin piston ones. have you tried the swap at all? is it worth it or should i just use stock size parts?