I actually bought it from a UK supplier for two reasons;
1) It was ordered in December before the VAT hike, and his price was pretty favourable for a UK supplier punting on a US diff.
2) With the diff being new age/generation and a step on from Peloquin/Quaiffe, I figured that if I buy it in the UK, and there is a
problem with it, which by the way I am sure there wont be, I could effectively send it back, something that would be much more of a task had it been bought from the USA.
Also, I am a believer in keeping all the OEM parts for the car, so I had the diff installed in a spare gearbox I sourced. The diff was fitted to the gearbox by a company in England and the gearbox was modified and strengthened at the same time.
Net result is I could revert the car back to standard with the OEM gearbox, clutch, intake, exhaust, fuel pump etc etc
I had considered a single mass flywheel to compliment the box and clutch, but decided against as I have heard various single mass flywheels, and they can sound awful. As I have to take customers in my car, I would sooner not have to explain the bag of bolts rumbling about in the front at idle. The lower rolling mass would have been nice though I guess.