Please add pointers/links for alternative/other manufacturer parts sources.

General



Tasmin Alternative Parts List - (wayback machine archive - be patient and it's a bit incomplete.)
(The interesting links are on the left hand side - you have to click on the blank bits as not all the images were cached.)

Engine



Transmission



Clutch friction plate - AP Racing CP2346-4. This should be good for up to 360lbf torque. Click link for a picture/reviews

Exhaust



Most of the exhaust is bespoke but some flanges and gaskets are common.

Exhaust 0 Rings for 350i

Electrics



400SE Horn Push

Ancillaries



Wedge wiper blades

Trim