A little background. I bought a CJ8 earlier this year. It is a nicely optioned Laredo model. It has a rebuilt engine and transmission. The engine runs rough. I am on the fence what to do with the drivetrain. Do I keep it relatively stock or swap in a late model 5.3L and 4L60E? I know how good the GM parts are, I have done many swaps. I would like to hear feedback from folks that have used off the shelf fuel injection kits (Howell, Holley, Mopar). Thank you!