Yes, 1.4. It still has engine, box, rear axel and brakes. The prop was shortened

So, I have a "343DL, registered 1st May 1982 and need some rear brake pistons.
I am struggling to find the part under the number shown on the old ones.....
Any advise would be greatly appreciated.
I think it reads 64677435 but that doesn't seem to fit with anything I can find on line

Hi chaps.
This is my 343DL. My Father made it and he passed a while ago and I am recommissioning it, and may have some questions!.