A little help Gear and Baulk Ring Part Numbers?

[Nemesis Guy]

Alright chaps, I am in the process of fitting an up rated 409 ORC clutch and removed the 6 speed gear box to be stripped, checked over and cleaned. Then getting the circlip problem fixed and the gear set will be sent off to be Cryogenically Frozen to try and add a bit of strength for it to take a bit more power. I will be posting a full thread shortly. For the time being the gear box specialist has said that 4th gear ring has worn down and started pitting loosing its strength and has recommended replacing it. Also the reverse Baulk ring taper has worn down making it crunch when trying to slot into reverse.

So would anyone on here please be able to provide me with the 4th gear part number and reverse baulk ring part number as I need to look at ordering them asap and find the best prices from Japan.

Thanks