The Si will have, among others I am sure to miss:
Sunroof
- Rear Sway
- Rear Disc Brakes (89-91 models, 88 Si still has drums)
- Nicely bolstered (and probably ripped) Recaro designed seats
- Cluster with tach that redlines at 7k? rpm
- The engine is a D16A6. It is stamped on the engine block, to the left of the exhaust manifold, right below the head. Just wipe the grease away.
- Stock 14" Alloy wheels

thats all i can think of right now..