6 Gears on the 5
Make sure u get the new clutch bell and the new wider pinions too you can't just upgrade the Spurs you must do the pinions too.
But really, with a good brace it's not needed once I braced my 5 I need stripped gears.
P.S. The 6 is better in so many ways. Wait until you strip a front belt and only have 10 minutes to do a 25 min job... I found it qicker to take the left hand front bulkhead off.