your a lot more limited on the 4Mo than the 1.8T cars for mods. The exhaust would be a Milltek I would guess. Suspension is unique to the 4Mo but the same as the R32 due to the 4WD so this could be a good upgrade. I am sure some companies do upgrades but they will be expensive. Panel filters are good, just don't get one thats coated with oil as this clogs up the MAF sensor and you will get running issues...