EXHAUSTIVE PIPEWORK

Various exhaust systems were fitted, and they can be divided into two main categories:
- The transverse mounted mid-silencer.
- The longitudinal mounted mid-silencer.
These again, can be divided into two sub-categories:
- With, or without turbo.

The clever part is that all 99's 90's and 900's have identically shaped floors, which will take both the transverse and the longitudinal mounted mid-silencer system.

The differences between the cars are mainly:
- 900 systems are longer than 99's. (5 cm longer wheelbase)
- 900's and 99's have a different downpipe. Therefore the front part of the system is shaped differently.

The rear overhang floor varies between models.
- The 99 saloon has one shape.
- The 99 combi coupe has another. (Longer, deeper)
- The 90 and 900 saloon are similar to eachother.
- The 900 combi coupe is a little longer.

The turbo output flange is similar on 99 and 900's.

Manifold, B one-piece	Manifold, H tubular	Manifold, H turbo	Downpipe, H turbo
Mid silencer, transverse 900t H	Mid silencer, transverse 99 H	Mid silencer, transverse 99 B	Silencer + endpipe longitudinal