Speaking of AI, I'm a lil biased towards the computer in my Subaru. The thing is so smart that aftermarket tuners had to start over when mapping them. What happened was, the computer was so smart that there piggy back plug and play setup wouldn't last. The computer caught on that it was being fooled, and corrected the changes through the piggy back. Now they completely replace the computer and map it while the car is on a dyno. The computer is smart enough to learn driving habbits, and add power where the driver uses it most, ie spark timing, fuel curve, and boost control. One import magazine took a long term review model in for a base dyno run before making modifications. The car had gained 7 hp in 3 months with no modifications. That's pretty damn smart if you ask me.
Speed density is the system of choice on race applications, but remember that those guys have the equipment to reprogram at the track, depending on the wheather. Mass air is more versatile for road applications, considering the loads and wheather conditions most of us put on our trucks.
Thanks for the info on the conversion kit, but I still want to know... Considering that these forced induction systems are sold as bolt on equipment.... Is it safe to say that my rebuilt, yet oem motor is stong enough to handle mild boost? How much boost are you pushing?