Living here in Cali smog laws are strict, saw this about 50 state legal engine swap with the 5.3, thinking about this for down the road as my 305 is getting old and tired, any of my Cali brothers done this swap yet, 5G's for the complete kit minus a few odds and ends sounds like this would be the way to go to freshen up my Silverado
http://www.chevyhardcore.com/news/gm...smog-legality/
http://media.gm.com/media/us/en/gm/n...0809_gmpp.html
http://www.crateenginedepot.com/E-Ro...04-P17456.aspx