Of course. I have rebuilt 6 LBC's Now on my 7th. Every time I bought new caliper pistons, but every time, they were probably good enough. This time I did not order them. Rusty, scoured and ugly! Now another order to England. Making the Royal Mail rich. FWIW, the TR caliper does not have the same kind of boot over it as the MG ones do, so more vulnerable to corrosion. Second seal though.