I am looking into trying to build a stronger diff. Quaife have a minimum order qty of I think it was 30 units, so I canned that.
Another firm will do stronger output and input shafts, but they need samples of the female splined items involved and as yet I do not have a full set, I am working on it.
Opinion on here seems to think the centre section will take reasonable power and torque as it is.
I started looking at this before the 'Ministry' settled on what criteria was needed to qualify for VHI status, so did not want to go stuffing in a Jag unit at the time.
I guess that is the way to go if you haven't gone too mad with changes elsewhere.
However I still wonder about that very long one piece prop that is needed for the Jag unit, I eagerly await Richard's review of high speed testing
I talked extensively with Classeparts, but was not able to get either a specification of works done or a price.