Does anyone know if it is possible to convert or add propane to the new body style trucks with the 5.3? Or if it would be worth it. I talked to a guy who said he knew someone who had a truck, dont know if it was chevy or not but he said that the guy got 1600 miles to a full tank.

look in http://www.dualcurve.com/ I do not know if there would be a protocol change on this year´s truck to the new CAN communications protocol like ford and Dodge did on some trucks, so check if the autotronics PN5929 will still work for you, I´v used it for a couple of years now and with gas prices hitting 3 bucks a gallon, propane is heaven on earth.

where can you get a kit to convert your truck over to propane

and whats the cost?

Here's some starting points...easily found with a google search

http://www.hendrixsystems.com/
http://www.motherearthnews.com/top_articles/1972_May_June/Convert_Your_Car_To_Propane
http://www.propanecouncil.org/trade/fleet/vehicle_conversions.htm

Good Luck :bananasmi

As a reference down in El Paso it cost me about $1,100.00