44mm caliper pistons

[Offcamber1]

Hello, I am looking for some 44mm diameter caliper pistons with a depth of between 21 and 23mm.  I found some 43mm x 23mm stainless pistons on a Brit bike web site but I'm striking out on 44mm with that level of depth.  Anyone have any potential ideas for a source?

These would be used in some obscure vintage racing calipers that were out of production by the mid 1990s.  The old pistons were steel with hardchrome and they have pitted with age and have the chrome peeling.

Thanks,

Kip