Help with a 2003 5.3 silvy
#1
Help with a 2003 5.3 silvy
I am starting off building a 03 5.3 silverado. What are some of the cheapest mods with the biggest gains that i can do to start this build. So far i all i have is a flowmaster exhaust and k&n air filter. All replies are considered and appreciated. thanks guys!
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