What are some easy do it yourself mods that can be done with the 99 LS1?

 

All free mods should be found on those. I just got done doing a few of them myself


http://www.ls1howto.com/
http://www.installuniversity.com/
http://www.gmhightechperformance.com...ons/index.html

 

if you are big into the drag racing, removal of the front sway bar, front bumper support, and all emissions equip. is worth about 50+ lbs and better weight transfer from the removal of the sway bar, my car still handles good doing this