The MTX alwasy has a reverse lock (you need to lift the thing on the lever) on the gearstick and the reserve is also locatded far left in the pattern if I remeber. IB5 has the reverse below 5th and has no lock for it or then you just press the entire stick down. MTX was fitted to diesel, RS and 2.0 variants and the IB5 to 1.4, 1.6 and 1.8 variants.