Bob,
According to the spread sheet of modern part numbers, the pinion seals are different indeed. With hindsight, the size of stated Chev seal is more the size that I would have expected.
It has only been in last few days that the chaps at Gympie Bearing Supplies (
http://www.gympiebearings.com.au/ ) have begun educating me on how to 'read' specifications of a bearing/cup/seal from the suppliers part number, and vice versa. While his edumacation is far from completed, if I had known then, that which I am now starting to understand, I would have realised immediately that the part number is wrong. Still, these things happen. I will rectify the situation by taking some measurements and presenting these for the computer search at the shop. I am in two minds about removing the pinion seal until I know I can secure a replacement. It's not in bad shape, and if brand new one or NOS from Ross Prince cannot be found, I'll keep using this one. I would be really surprised if both of those avenues didn't produce a result. I got the rear one from Ross P., and it looked brand new, though NOS.
Chips don't come in a plastic bag, that's a packet of 'crisps'.
Hence the phrase, going out for 'fish & chips', or the insult "Face like he's been bobbing for Hot Chips".
