Engine, all brackets,(alternator, mounts, ALL) All exhaust in front of the cat. PCM and all attached wiring. Even under the dash. If you intend on using the trans,(4t65e) converter, cables, lines, wiring. At least the inner tripot joints. I'd raid the outside fuse box with relays and wiring. You'll be surprised how much of the harness you can use. Can't hurt to have the fans.
Cruise assembly and wiring.
Any solenoids, including the vent solenoid left rear quarter panel. Starter. You can raid the ignition lock cylinder and Pass key wiring if you feel like adding the BCM. If the car has a Saganaw type steering collumn, raid the turn signal/wiper switch and stalk.
I'll have to remind myself to look at my son in laws 1998 88 and get back to you.
[This message has been edited by cmechmann (edited 11-29-2013).]