e21 head bolts - socket to fit

[Five Star 0]

I'm currently taking off the head to replace the head gasket.

I'm going to replace the head gasket, manifold gaskets and probably timing belt while I'm at it.

Does anyone know where I can source the socket to fit the bolts? It's a six headed star bolt. I've already got the torque wrench.

Repco only have it in a 20 piece set which will set me back 70 odd dollars, which I'd like to avoid.

Also any tips on taking off the head bolts and timing belt would be much appreciated.

Thanks

Tom