water valve !!!!

If it is the same valve from 67 to 72 models ( one in, one out, 2 vacuum ports ), the last one I saw on ebay was NOS and priced at 135.00. :( .
If you have the OEM valve and the issue with it is water leak, There is surely a way to take it apart and replace the seal. haven't decided if I will attempt this myself or seek a old school plumber experienced in soldered copper valve renew.