Seriuously though!
What year and mileage on your 5.3 and year mileage on the LS1?
My wifes 2004 Tahoe needs some act right, I'm thinking if it's jacked I'll just do a 6.0 swap, but if the price is right....
2002 Silverado 2500HD LB7 CCSB LT
EFI Live by Rob at ATP, Edge CTS Insight DSP 5 control, S&B CAI, PPE boost valve, Pro Fab AIH, AirDog II 165, PPE WIF sensor delete plug, 5" stainless exhaust, Cognito braces & HD tie rods, H2's 315/70 R17 BFG's
2004 Tahoe LT
2006 Silverado Z71 LS
1971 Chevy C10