Does anyone know what all is need to swap in an LS1 engine into a 2003 RCSB Chevy Silverado that is currently V6? Search is my enemy.

I can get the truck and the LS1 for free. Since im not paying for the truck, i couldnt be able to sell it.

 

What about the interior harness and/or the gauge cluster?

 

My dad bought this truck for my sister as a birthday gift back in '03 but since its only a reg. cab, she needs more space for the family. So my dad is going to trade in our 00 Impala for a quad cab short bed chevy and I get to keep the little V6.

Its black with cloth interior, stock but all that is soon to change.

Right now there should be about 20 (some pending) of us in Street Rods but lately we havent done anything. Mainly Fbodies now. I dont know who has the fastest truck though, but soon it will be me

 

I want to go with a 6 speed.