Upfitter Underhood Relays for X7 connector on X61A Junction box

[Sparky1]

I picked up a 2017 Suburban LT, non PPV, about a year back and finally getting around to wiring up my pure-sin inverter for the laptop. I've picked up the upfitter pigtail but the relays in the main, under hood fuse box are not populated, and I can't find any documentation to indicate the correct relay part number. Any of you PPV owners, or someone that's used the upfitter connector, know the correct 30A relay for these locations: 29, 37, 48, 72? The schematic just says KR161A, B, C, D.