I own a 95 bonnevile se with the series 2 3800. The engines fine just want more pier and th 4t65e tranny not to mention the sound of the supercharger I know the l67 will bolt right in bout what about the harness and computer since mine is an obd one and the l67 is obd 2 and the computers are in diffrent locations. Correct me if I'm wrong. So I have to swap the harness under the hood and computers. ( is their any way to use my original PCM ? Probly not) but I have some qustions will the code in my key work with the new computer.? Will I have to swap my intrior wiring harness, if not will I have to add tration control buttons and performance buttons? And how about the obd plug will that need changed, or maybe even my instrument cluster? Well bottom line is what will be need to be swap in my 95 bonneville se to allow the l67 supercharged 3800 v6 with the 4t65e HD trans to run and drive? I have a choice of getting these (l67 and 4t65e HD) out of a 96 lasaber( park ave can't remeber) or an 1996ssei. Both with under 80xxx but is ethier one more powerful or better gearing? I'm going to pick the motor ant trans up this Friday. Any help would be greatly appreciTed. Thank you