you need the transmission mount from the si, a del sol ac bracket the one that comes with si motor, si power steering brackets and pump, wiring harness from a vtec car or enough wire to wire the vtec to the ecu, since your car is 96 is obd2a and the b16a2 is obd2b so you'll need either an ecu from the 96 del sol si or a conversion harness from obd2a to ob2b.
I can't think of anything else but if you need some help let me know I have done this swap in my car and aaronfelipe can vouch for it