https://coldhose.com/catalog/product...g/category/39/
Docsblocks.com is no longer around, but coldhose.com is.
"AA2209" and "AA2210" is what you need. "AA2209-AA2210" is the combined part number.
GM 5.3L Compressor Discharge and Suction Block Fittings
Part #AA2209-AA2210
GM 5.3L Compressor Blocks
Fits Denso 10S17F Compressors on the GM 5.3L Engines
GM 5.3L Compressor Discharge and Suction Block Fittings