Would a replacement '07 NNBS intake and Throttle body be what I'm looking for for more power on my '03 Yukon 5.3L? I've heard this is good for a power increase. I see AC Delco OEM replacement units on Rock Auto for a decent price. Is that the right parts? Looks like #2172422 Throttle Body and # 12580420 on the intake. Are the intake gaskets the same between the 2? I know some have done the TBSS intake & TB swap, but many have had computer/code issues. IIRC, the NNBS intake & TB was the way to go. Any info/details here about parts or any relearn procedures would be a big help- I do have a BBP Autocal ready to get to work when headers, exhaust and intake are done... Thanks!