I have had an issue on my AC Cobra with a leaking rear calliper where I had naively hoped that a set of new seals would cure said leak.

As seals are no longer available I have ended up funding the design of a complete 4 pot calliper conversion.

It will result in a set of brakes which are more in keeping with the performance of the vehicle, but it would have been a tad cheaper to have just bought a set of seals.