one thing about intercooling that car.. shadows cant use the daytona/lebaron IC/Rad setup which is the most common. You COULD fab some mounts and use it, but its no bolt in.
Put the g-valve on and set it to 15psi or even the same as its at now. The computer can handle up to 15 (where the cutout is). Even at stock boost, it spools SOOO much quicker. Well, actually.. you have a Mitsy turbo so it wont be a HUGE diff, but still noticable im sure