5.3 to a 6.0 swap

[Big Chevy]

OK guy's I want to do this swap, my truck is a 99 Z71 Ext. cab w/ the 5.3 - the 8th digit in my VIN is T, what kind of harness, ecu, intake, etc am I to be looking for. I'm dont know what the T equates to in the VIN ... any help ?

[PitchBlackC3]

All you need is the long block. Reuse your intake, accessories, etc. Check the part number on your injectors. Some 99s have smaller ones, but most have the same as the 6.0. Your harness and PCM will work once the PCM is reprogrammed for the 6.0

[Big Chevy]

Thanks for the info PitchBlackC3 !