im trying to convert my 1999 5.3liter silverado to LS1 or LS6....What are Some of the components i need...i know the heads, intake, the cpu system or can i keep the existing one?...or would it be easier and cheaper to buy a used ls1 with the wiring harness and just swap it out?....
On my existing motor i have the K&N cold air intake, Heddman headers, flowmasters and an electronic exhaust cut-out and some cpu mods....where else can i get some hp or trq...are underdrive pullies worth buying...
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