Ditto on the TurboII Transmission, they are significantly more robust than the NA 13b trannys. Second Gear synchro is usually fairly worn, and slow when cold, but that can be improved with some redline/ synthetic gear oil. Also the idler pilot bushing/bearing can cause some trouble, and the throw out/clutch release bearing can get toasted also. (You will hear it easily when in neutral, and you push in the clutch pedal.)
Personally, I think the main gremlins with an older STOCK 87-88 TII are the interior electrical components (Wiper switch, headlight switch, heater A/C unit, electric antennae, to name a few) and leaky/worn fuel injectors that weep gas when motor is off flooding the engine, and thinning the oil out with fuel.
My next Turbo II will be an 89-91 model, as they made alot of nice improvements, and upgraded the engine from 180hp to 200.