I'll post up some pics of my efforts so far. I'm doing a general refresh and trying to solve most common M3 associated problems.
Renewed the gearbox oil. Renewed the diff oil and added reline friction modifier . Oil service at BMW. New Bosch headlight lens are on order. Possibly a little wheel refurb before my set of Michelin cups are fitted.
I've renewed the Constant Pressure Valve O ring as the old one was leaking engine oil.
The front and rear Anti roll bars were getting in a poor state. So I've stripped them back to bare metal and send them off for powder coating.
I'll reinstall them with power flex bushes, new front drop links, new rear stabiliser links with trick polybush inserts.

I fitted a full AP brake setup running std ds2500 pads and ATE blue racing brake fluid

I've swapped the steering knuckle joint as there was a little play in the steering about dead centre. Once removed you couldn't tell or see any play. But put it in a vice a use some leverage the play was massive. £56.67 from dealer part no.32306761571 and bolts *2 £1.88 32306778609

The prop shaft guilbo was cracked and worn. So I'm replacing it.

The front headlight level assembly had corroded and snapped. So I've bought a new one £42

New air filter ITG type
Renewed the gearbox oil. Renewed the diff oil and added reline friction modifier . Oil service at BMW. New Bosch headlight lens are on order. Possibly a little wheel refurb before my set of Michelin cups are fitted.
I've renewed the Constant Pressure Valve O ring as the old one was leaking engine oil.
The front and rear Anti roll bars were getting in a poor state. So I've stripped them back to bare metal and send them off for powder coating.
I'll reinstall them with power flex bushes, new front drop links, new rear stabiliser links with trick polybush inserts.

I fitted a full AP brake setup running std ds2500 pads and ATE blue racing brake fluid

I've swapped the steering knuckle joint as there was a little play in the steering about dead centre. Once removed you couldn't tell or see any play. But put it in a vice a use some leverage the play was massive. £56.67 from dealer part no.32306761571 and bolts *2 £1.88 32306778609

The prop shaft guilbo was cracked and worn. So I'm replacing it.

The front headlight level assembly had corroded and snapped. So I've bought a new one £42

New air filter ITG type

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