This Ring Gear is not old stock , it is an after market part made by a Ring Gear manufacturer in India , i ordered 20 of them a few years ago and have sold 10 to date , i have had no complaints about quality
You will need to verify the dimensions before ordering.
Price each is NZ $ 175.00 plus shipping
Shipping cost would depend on where you are and method of delivery probably between NZ $90 to NZ 125.00
Payment via paypal is required prior to shipping

Regards

Phil Wood
Wood Engineering Services Ltd
www.ringgear.co.nz
Ring Gears R us