M03 - Start with an M03M Suzuki Swift kit or a LWB 2006 Mini Cooper. They're the best overall value for money - No questions, its just the way it is. The M03R is more a show pony although it still has most of the good stuff anyway. If you want the full run-down check out our full review elsewhere.

Bearings - You'll need 2 - 8 x 5 (850) and 4 - 11 x 5 (1150) These are for the transmission. It comes with wheel hub bearings standard.

Shocks - 50746 Super Mini Oil shocks. Get them, you dont need alloy ones, these work just fine. And the kit oil is FINE!

Springs - 53333 Tuned Spring set, or the 53440 Tuned Spring set. You need them to enable you to drop the ride height far enough.

M05 - Well, it's probably best to buy the Pro kit if you can afford it. Mainly because it already comes with all the bearings. And on an M05 that's a lot as it also includes the steering.

Add shocks as well because the clear plastic ones are CRAP! But the included spring set is good.

Thats it, you do not NEED anything else. Thats really all you need to go fast with a Mini.

Diff - 53267 TA03 Ball Diff. You dont NEED it, but lots of people prefer it. For the 05 there is the optional M05 ball diff (54194) but the jury is out on these. They are proving somewhat troublesome.

Unis - 53597 Assembly type Universals. These are pretty good. We like em.

Pinion - 53509 Hardened Pinion. Its tougher and doesnt 'go italic' like the standard one.

Shocks - 53571 TRF Shocks. They dont really make a difference on a Mini, but DAMN they look cool.

Roll Bars - 53343 Anti-Roll Bar set. Some swear by them, some at them. You choose, and they're for the M03 only. There are none available for the M05 as yet

Output Shafts - 53217/8 Hardened Output shafts. Last heaps longer than original.

Heat Sink - 53344 M03 Motor Heat Sink. Feel free to buy one, just don't actually think that it does anything. 54184 is the M05 version and it's usefulness is also questionable.