4992 wrote: Laurence, Quaife sounds interesting, I take it you rebuild the existing Triumph diff with the Quaife in it? Basically turning it into a Triumph LSD? How does this make it more reliable, I don't quite understand, probably just being dim. Certainly not cheap though as you say. http://quaife.co.uk/shop/search/results/taxonomy%3A410%2C433 Bradley the Quaife replaces the actual diferential gear assy which is the common failure on small Triumph diffs you bolt your crown wheel to it. The 3.63 is the strongest CWP Triumph built. It is more reliable because it is capable of taking quite a bit of grunt and abuse without exploding. How do I know this ?