Russian heads number 241 with the valves and springs all standard, and the head is not resurfaced. Remove your heads and install these. LS1 base can be installed on the 6.0-liter, 5.3, and 4.8 engines. Price: 800 SAR. A good pump, I don’t know if it's standard or from a Denali; I removed it from my engine. The pressure is 60 lb for 250 SAR. LS1 standard lifters for 250 SAR. Standard head bolts for 150 SAR, removed all at once. All parts are removed from my engine, which has driven 120,000 km because I took on a project. Contact me privately if the prices are suitable, and I'll provide my number.