We have now manufactured 2.5” systems for these cars
Design: 2,5”
End pipe: 80mm
Model:
240 75~92
All with B21, B23 and B230 engine
Note: No catalytic converter
Note: Front pipe not included, see accessories (crossed out in red in the picture) 
Not needed if you run with extractor manifold
If you use an extractor manifold, you must make a transition to the exhaust system