San Antonio, 05 5.3l Silverado Z-71. Had a Vinci #112 "Butt Kicker" cam, heavy duty valve springs , chromoly push rods and a nelson tune. Swapped the OE cam out last year when I thought I was selling my truck. I sold the cam but kept the truck. Now I'm looking for another cam. Will probably do some searching on the site to see what is good for a daily driver truck that doesn't tow.