Guys found this overdrive on eBay. Thought there may be a few people interested. Can any one confirm whether it would be suitable to bolt up to my m400 on the 164? It's a bit pricey but it might be worth it......
http://www.ebay.com.au/itm/Laycock-Norman-de-Ville-J-Type-Overdrive-Assy-Triumph-Jaguar-Volvo-MG-/281351356355?