1982 430cc and 250cc connecting rods..the same?

Hello and happy new year. I am trying to find out if the 1982 250 and 430 are the same length connecting rods etc. The Euro-rod site has them both using the same part number 1619825-01, which comes back to a 430 rod. Please let me know if anyone has any experience with these and can tell me straight up. Also, does anyone know of a good source for Mahle or Husky 430 pistons. Thanks again. Mike