DONT. If your # crunching by the time you buy all the things needed to do this swap that you dont have. Im sure that will off set the $ saved on gas. In the long run. Besides when that punk kid pulls up next to you with that 6 cyl.in your car you'll have to turn away. Yes there are some high torquing 6s out there but theres the $ thing again. Keeping it real. .02 BIll