yes... only 5.3 was avail in tahoe/burb.... until like '18 w/ the RST pkg
factory airbox will support your HP on stock pulley (6#) you can then add a better drop in filter.
or i went w/ the GM performance CAI. this way GM wouldnt be likely to void my warranty
i love my Corsa exhaust & i dont even have LTs yet
a single 3" exhaust can handle 500-600HP.
the 6.2 models have 3.5" exhaust & those seem to handle 700-800, just fine
if you have a 5.3 w/ a 2300... you lose some low end TQ, but gain more HP on top end, compared to me.
1st time on dyno w/ callaway/magnuson tune, i had 403HP/400TQ
after BBP tune, i had 430HP
i havent been back since i did GM CAI & smaller pulley... in theory i should be in 445-465 range
i have LTs ordered finally. just need to get a new driveshaft, before i do next dyno run.
w/ LTs, an updated BBP tune, new plugs & wires... hope to be in the 500-520 range
eta:
definitely remove airbox & trim fender opening... you will see what im talking about
then port the box opening to match the fender opening.
that will help a little too
pretty sure someone has a thread on it here